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			<HR>

			<H3>9. Errors
			</H3>
			<P>This section describes the various kinds of errors you can encounter
			when using LAMMPS.
			</P>
			9.1 <A HREF = "#9_1">Common problems</A><BR>
			9.2 <A HREF = "#9_2">Reporting bugs</A><BR>
			9.3 <A HREF = "#9_3">Error & warning messages</A> <BR>

			<HR>

			<A NAME = "9_1"></A><H4>9.1 Common problems
			</H4>
			<P>If two LAMMPS runs do not produce the same answer on different
			machines or different numbers of processors, this is typically not a
			bug. In theory you should get identical answers on any number of
			processors and on any machine. In practice, numerical round-off can
			cause slight differences and eventual divergence of molecular dynamics
			phase space trajectories within a few 100s or few 1000s of timesteps.
			However, the statistical properties of the two runs (e.g. average
			energy or temperature) should still be the same.
			</P>
			<P>If the <A HREF = "velocity.html">velocity</A> command is used to set initial atom
			velocities, a particular atom can be assigned a different velocity
			when the problem is run on a different number of processors or on
			different machines. If this happens, the phase space trajectories of
			the two simulations will rapidly diverge. See the discussion of the
			<I>loop</I> option in the <A HREF = "velocity.html">velocity</A> command for details and
			options that avoid this issue.
			</P>
			<P>Similarly, the <A HREF = "create_atoms.html">create_atoms</A> command generates a
			lattice of atoms. For the same physical system, the ordering and
			numbering of atoms by atom ID may be different depending on the number
			of processors.
			</P>
			<P>Some commands use random number generators which may be setup to
			produce different random number streams on each processor and hence
			will produce different effects when run on different numbers of
			processors. A commonly-used example is the <A HREF = "fix_langevin.html">fix
			langevin</A> command for thermostatting.
			</P>
			<P>A LAMMPS simulation typically has two stages, setup and run. Most
			LAMMPS errors are detected at setup time; others like a bond
			stretching too far may not occur until the middle of a run.
			</P>
			<P>LAMMPS tries to flag errors and print informative error messages so
			you can fix the problem. Of course, LAMMPS cannot figure out your
			physics or numerical mistakes, like choosing too big a timestep,
			specifying erroneous force field coefficients, or putting 2 atoms on
			top of each other! If you run into errors that LAMMPS doesn't catch
			that you think it should flag, please send an email to the
			<A HREF = "http://lammps.sandia.gov/authors.html">developers</A>.
			</P>
			<P>If you get an error message about an invalid command in your input
			script, you can determine what command is causing the problem by
			looking in the log.lammps file or using the <A HREF = "echo.html">echo command</A>
			to see it on the screen. For a given command, LAMMPS expects certain
			arguments in a specified order. If you mess this up, LAMMPS will
			often flag the error, but it may read a bogus argument and assign a
			value that is valid, but not what you wanted. E.g. trying to read the
			string "abc" as an integer value and assigning the associated variable
			a value of 0.
			</P>
			<P>Generally, LAMMPS will print a message to the screen and exit
			gracefully when it encounters a fatal error. Sometimes it will print
			a WARNING and continue on; you can decide if the WARNING is important
			or not. If LAMMPS crashes or hangs without spitting out an error
			message first then it could be a bug (see <A HREF = "#9_2">this section</A>) or one
			of the following cases:
			</P>
			<P>LAMMPS runs in the available memory a processor allows to be
			allocated. Most reasonable MD runs are compute limited, not memory
			limited, so this shouldn't be a bottleneck on most platforms. Almost
			all large memory allocations in the code are done via C-style malloc's
			which will generate an error message if you run out of memory.
			Smaller chunks of memory are allocated via C++ "new" statements. If
			you are unlucky you could run out of memory just when one of these
			small requests is made, in which case the code will crash or hang (in
			parallel), since LAMMPS doesn't trap on those errors.
			</P>
			<P>Illegal arithmetic can cause LAMMPS to run slow or crash. This is
			typically due to invalid physics and numerics that your simulation is
			computing. If you see wild thermodynamic values or NaN values in your
			LAMMPS output, something is wrong with your simulation. If you
			suspect this is happening, it is a good idea to print out
			thermodynamic info frequently (e.g. every timestep) via the
			<A HREF = "thermo.html">thermo</A> so you can monitor what is happening.
			Visualizing the atom movement is also a good idea to insure your model
			is behaving as you expect.
			</P>
			<P>In parallel, one way LAMMPS can hang is due to how different MPI
			implementations handle buffering of messages. If the code hangs
			without an error message, it may be that you need to specify an MPI
			setting or two (usually via an environment variable) to enable
			buffering or boost the sizes of messages that can be buffered.
			</P>
			<HR>

			<A NAME = "9_2"></A><H4>9.2 Reporting bugs
			</H4>
			<P>If you are confident that you have found a bug in LAMMPS, follow these
			steps.
			</P>
			<P>Check the <A HREF = "http://lammps.sandia.gov/bug.html">New features and bug
			fixes</A> section of the <A HREF = "http://lammps.sandia.gov">LAMMPS WWW
			site</A> to see if the bug has already been reported or fixed or the
			<A HREF = "http://lammps.sandia.gov/unbug.html">Unfixed bug</A> to see if a fix is
			pending.
			</P>
			<P>Check the <A HREF = "http://lammps.sandia.gov/mail.html">mailing list</A>
			to see if it has been discussed before.
			</P>
			<P>If not, send an email to the mailing list describing the problem with
			any ideas you have as to what is causing it or where in the code the
			problem might be. The developers will ask for more info if needed,
			such as an input script or data files.
			</P>
			<P>The most useful thing you can do to help us fix the bug is to isolate
			the problem. Run it on the smallest number of atoms and fewest number
			of processors and with the simplest input script that reproduces the
			bug and try to identify what command or combination of commands is
			causing the problem.
			</P>
			<P>As a last resort, you can send an email directly to the
			<A HREF = "http://lammps.sandia.gov/authors.html">developers</A>.
			</P>
			<HR>

			<H4><A NAME = "9_3"></A>9.3 Error & warning messages
			</H4>
			<P>These are two alphabetic lists of the <A HREF = "#error">ERROR</A> and
			<A HREF = "#warn">WARNING</A> messages LAMMPS prints out and the reason why. If the
			explanation here is not sufficient, the documentation for the
			offending command may help. Grepping the source files for the text of
			the error message and staring at the source code and comments is also
			not a bad idea! Note that sometimes the same message can be printed
			from multiple places in the code.
			</P>
			<P>Also note that error messages from <A HREF = "Section_start.html#2_3">user-contributed
			packages</A> are not listed here. Is such an
			error occurs and is not self-explanatory, you'll need to look in the
			source code or contact the author of the package.
			</P>
			<H4><A NAME = "error"></A>Errors:
			</H4>
			<DL>

			<DT><I>1-3 bond count is inconsistent</I>

			<DD>An inconsistency was detected when computing the number of 1-3
			neighbors for each atom. This likely means something is wrong with
			the bond topologies you have defined.

			<DT><I>1-4 bond count is inconsistent</I>

			<DD>An inconsistency was detected when computing the number of 1-4
			neighbors for each atom. This likely means something is wrong with
			the bond topologies you have defined.

			<DT><I>All angle coeffs are not set</I>

			<DD>All angle coefficients must be set in the data file or by the
			angle_coeff command before running a simulation.

			<DT><I>All bond coeffs are not set</I>

			<DD>All bond coefficients must be set in the data file or by the
			bond_coeff command before running a simulation.

			<DT><I>All dihedral coeffs are not set</I>

			<DD>All dihedral coefficients must be set in the data file or by the
			dihedral_coeff command before running a simulation.

			<DT><I>All dipole moments are not set</I>

			<DD>For atom styles that define dipole moments for each atom type, all
			moments must be set in the data file or by the dipole command before
			running a simulation.

			<DT><I>All improper coeffs are not set</I>

			<DD>All improper coefficients must be set in the data file or by the
			improper_coeff command before running a simulation.

			<DT><I>All masses are not set</I>

			<DD>For atom styles that define masses for each atom type, all masses must
			be set in the data file or by the mass command before running a
			simulation. They must also be set before using the velocity
			command.

			<DT><I>All pair coeffs are not set</I>

			<DD>All pair coefficients must be set in the data file or by the
			pair_coeff command before running a simulation.

			<DT><I>All shapes are not set</I>

			<DD>All atom types must have a shape setting, even if the particles
			are spherical.

			<DT><I>All universe/uloop variables must have same # of values</I>

			<DD>Self-explanatory.

			<DT><I>All variables in next command must be same style</I>

			<DD>Self-explanatory.

			<DT><I>Angle atom missing in delete_bonds</I>

			<DD>The delete_bonds command cannot find one or more atoms in a particular
			angle on a particular processor. The pairwise cutoff is too short or
			the atoms are too far apart to make a valid angle.

			<DT><I>Angle atom missing in set command</I>

			<DD>The set command cannot find one or more atoms in a particular angle on
			a particular processor. The pairwise cutoff is too short or the atoms
			are too far apart to make a valid angle.

			<DT><I>Angle atoms %d %d %d missing on proc %d at step %d</I>

			<DD>One or more of 3 atoms needed to compute a particular angle are
			missing on this processor. Typically this is because the pairwise
			cutoff is set too short or the angle has blown apart and an atom is
			too far away.

			<DT><I>Angle coeff for hybrid has invalid style</I>

			<DD>Angle style hybrid uses another angle style as one of its
			coefficients. The angle style used in the angle_coeff command or read
			from a restart file is not recognized.

			<DT><I>Angle coeffs are not set</I>

			<DD>No angle coefficients have been assigned in the data file or via the
			angle_coeff command.

			<DT><I>Angle potential must be defined for SHAKE</I>

			<DD>When shaking angles, an angle_style potential must be used.

			<DT><I>Angle style hybrid cannot have hybrid as an argument</I>

			<DD>Self-explanatory.

			<DT><I>Angle style hybrid cannot have none as an argument</I>

			<DD>Self-explanatory.

			<DT><I>Angle style hybrid cannot use same angle style twice</I>

			<DD>Self-explanatory.

			<DT><I>Angle table must range from 0 to 180 degrees</I>

			<DD>Self-explanatory.

			<DT><I>Angle table parameters did not set N</I>

			<DD>List of angle table parameters must include N setting.

			<DT><I>Angle_coeff command before angle_style is defined</I>

			<DD>Coefficients cannot be set in the data file or via the angle_coeff
			command until an angle_style has been assigned.

			<DT><I>Angle_coeff command before simulation box is defined</I>

			<DD>The angle_coeff command cannot be used before a read_data,
			read_restart, or create_box command.

			<DT><I>Angle_coeff command when no angles allowed</I>

			<DD>The chosen atom style does not allow for angles to be defined.

			<DT><I>Angle_style command when no angles allowed</I>

			<DD>The chosen atom style does not allow for angles to be defined.

			<DT><I>Angles assigned incorrectly</I>

			<DD>Angles read in from the data file were not assigned correctly to
			atoms. This means there is something invalid about the topology
			definitions.

			<DT><I>Angles defined but no angle types</I>

			<DD>The data file header lists angles but no angle types.

			<DT><I>Another input script is already being processed</I>

			<DD>Cannot attempt to open a 2nd input script, when the original file is
			still being processed.

			<DT><I>Arccos of invalid value in variable formula</I>

			<DD>Argument of arccos() must be between -1 and 1.

			<DT><I>Arcsin of invalid value in variable formula</I>

			<DD>Argument of arcsin() must be between -1 and 1.

			<DT><I>At least one process could not allocate a CUDA-enabled gpu</I>

			<DD>Self-explanatory.

			<DT><I>Atom IDs must be consecutive for dump dcd</I>

			<DD>Self-explanatory.

			<DT><I>Atom IDs must be consecutive for dump xtc</I>

			<DD>Self-explanatory.

			<DT><I>Atom IDs must be consecutive for dump xyz</I>

			<DD>Self-explanatory.

			<DT><I>Atom IDs must be consecutive for velocity create loop all</I>

			<DD>Self-explanatory.

			<DT><I>Atom count is inconsistent, cannot write restart file</I>

			<DD>Sum of atoms across processors does not equal initial total count.
			This is probably because you have lost some atoms.

			<DT><I>Atom in too many rigid bodies - boost MAXBODY</I>

			<DD>Fix poems has a parameter MAXBODY (in fix_poems.cpp) which determines
			the maximum number of rigid bodies a single atom can belong to (i.e. a
			multibody joint). The bodies you have defined exceed this limit.

			<DT><I>Atom sort did not operate correctly</I>

			<DD>This is an internal LAMMPS error. Please report it to the
			developers.

			<DT><I>Atom sorting has bin size = 0.0</I>

			<DD>The neighbor cutoff is being used as the bin size, but it is zero.
			Thus you must explicitly list a bin size in the atom_modify sort
			command or turn off sorting.

			<DT><I>Atom style hybrid cannot have hybrid as an argument</I>

			<DD>Self-explanatory.

			<DT><I>Atom style hybrid cannot use same atom style twice</I>

			<DD>Self-explanatory.

			<DT><I>Atom vector in equal-style variable formula</I>

			<DD>Atom vectors generate one value per atom which is not allowed
			in an equal-style variable.

			<DT><I>Atom-style variable in equal-style variable formula</I>

			<DD>Atom-style variables generate one value per atom which is not allowed
			in an equal-style variable.

			<DT><I>Atom_modify map command after simulation box is defined</I>

			<DD>The atom_modify map command cannot be used after a read_data,
			read_restart, or create_box command.

			<DT><I>Atom_modify sort and first options cannot be used together</I>

			<DD>Self-explanatory.

			<DT><I>Atom_style command after simulation box is defined</I>

			<DD>The atom_style command cannot be used after a read_data,
			read_restart, or create_box command.

			<DT><I>Attempt to pop empty stack in fix box/relax</I>

			<DD>Internal LAMMPS error. Please report it to the developers.

			<DT><I>Attempt to push beyond stack limit in fix box/relax</I>

			<DD>Internal LAMMPS error. Please report it to the developers.

			<DT><I>Attempting to rescale a 0.0 temperature</I>

			<DD>Cannot rescale a temperature that is already 0.0.

			<DT><I>Bad FENE bond</I>

			<DD>Two atoms in a FENE bond have become so far apart that the bond cannot
			be computed.

			<DT><I>Bad grid of processors</I>

			<DD>The 3d grid of processors defined by the processors command does not
			match the number of processors LAMMPS is being run on.

			<DT><I>Bad kspace_modify slab parameter</I>

			<DD>Kspace_modify value for the slab/volume keyword must be >= 2.0.

			<DT><I>Bad principal moments</I>

			<DD>Fix rigid did not compute the principal moments of inertia of a rigid
			group of atoms correctly.

			<DT><I>Bias compute does not calculate a velocity bias</I>

			<DD>The specified compute must compute a bias for temperature.

			<DT><I>Bias compute does not calculate temperature</I>

			<DD>The specified compute must compute temperature.

			<DT><I>Bias compute group does not match compute group</I>

			<DD>The specified compute must operate on the same group as the parent
			compute.

			<DT><I>Bitmapped lookup tables require int/float be same size</I>

			<DD>Cannot use pair tables on this machine, because of word sizes. Use
			the pair_modify command with table 0 instead.

			<DT><I>Bitmapped table in file does not match requested table</I>

			<DD>Setting for bitmapped table in pair_coeff command must match table
			in file exactly.

			<DT><I>Bitmapped table is incorrect length in table file</I>

			<DD>Number of table entries is not a correct power of 2.

			<DT><I>Bond and angle potentials must be defined for TIP4P</I>

			<DD>Cannot use TIP4P pair potential unless bond and angle potentials
			are defined.

			<DT><I>Bond atom missing in delete_bonds</I>

			<DD>The delete_bonds command cannot find one or more atoms in a particular
			bond on a particular processor. The pairwise cutoff is too short or
			the atoms are too far apart to make a valid bond.

			<DT><I>Bond atom missing in set command</I>

			<DD>The set command cannot find one or more atoms in a particular bond on
			a particular processor. The pairwise cutoff is too short or the atoms
			are too far apart to make a valid bond.

			<DT><I>Bond atoms %d %d missing on proc %d at step %d</I>

			<DD>One or both of 2 atoms needed to compute a particular bond are
			missing on this processor. Typically this is because the pairwise
			cutoff is set too short or the bond has blown apart and an atom is
			too far away.

			<DT><I>Bond coeff for hybrid has invalid style</I>

			<DD>Bond style hybrid uses another bond style as one of its coefficients.
			The bond style used in the bond_coeff command or read from a restart
			file is not recognized.

			<DT><I>Bond coeffs are not set</I>

			<DD>No bond coefficients have been assigned in the data file or via the
			bond_coeff command.

			<DT><I>Bond potential must be defined for SHAKE</I>

			<DD>Cannot use fix shake unless bond potential is defined.

			<DT><I>Bond style hybrid cannot have hybrid as an argument</I>

			<DD>Self-explanatory.

			<DT><I>Bond style hybrid cannot have none as an argument</I>

			<DD>Self-explanatory.

			<DT><I>Bond style hybrid cannot use same bond style twice</I>

			<DD>The sub-style arguments of bond_style hybrid cannot be duplicated.
			Check the input script.

			<DT><I>Bond style quartic cannot be used with 3,4-body interactions</I>

			<DD>No angle, dihedral, or improper styles can be defined when using
			bond style quartic.

			<DT><I>Bond style quartic requires special_bonds = 1,1,1</I>

			<DD>This is a restriction of the current bond quartic implementation.

			<DT><I>Bond table parameters did not set N</I>

			<DD>List of bond table parameters must include N setting.

			<DT><I>Bond_coeff command before bond_style is defined</I>

			<DD>Coefficients cannot be set in the data file or via the bond_coeff
			command until an bond_style has been assigned.

			<DT><I>Bond_coeff command before simulation box is defined</I>

			<DD>The bond_coeff command cannot be used before a read_data,
			read_restart, or create_box command.

			<DT><I>Bond_coeff command when no bonds allowed</I>

			<DD>The chosen atom style does not allow for bonds to be defined.

			<DT><I>Bond_style command when no bonds allowed</I>

			<DD>The chosen atom style does not allow for bonds to be defined.

			<DT><I>Bonds assigned incorrectly</I>

			<DD>Bonds read in from the data file were not assigned correctly to atoms.
			This means there is something invalid about the topology definitions.

			<DT><I>Bonds defined but no bond types</I>

			<DD>The data file header lists bonds but no bond types.

			<DT><I>Both sides of boundary must be periodic</I>

			<DD>Cannot specify a boundary as periodic only on the lo or hi side. Must
			be periodic on both sides.

			<DT><I>Boundary command after simulation box is defined</I>

			<DD>The boundary command cannot be used after a read_data, read_restart,
			or create_box command.

			<DT><I>Box bounds are invalid</I>

			<DD>The box boundaries specified in the read_data file are invalid. The
			lo value must be less than the hi value for all 3 dimensions.

			<DT><I>Cannot (yet) use PPPM with triclinic box</I>

			<DD>This feature is not yet supported.

			<DT><I>Cannot change box to orthogonal when tilt is non-zero</I>

			<DD>Self-explanatory

			<DT><I>Cannot change box with certain fixes defined</I>

			<DD>The change_box command cannot be used when fix ave/spatial or
			fix/deform are defined .

			<DT><I>Cannot change box with dumps defined</I>

			<DD>Self-explanatory.

			<DT><I>Cannot change dump_modify every for dump dcd</I>

			<DD>The frequency of writing dump dcd snapshots cannot be changed.

			<DT><I>Cannot change dump_modify every for dump xtc</I>

			<DD>The frequency of writing dump xtc snapshots cannot be changed.

			<DT><I>Cannot change timestep with fix pour</I>

			<DD>This fix pre-computes some values based on the timestep, so it cannot
			be changed during a simulation run.

			<DT><I>Cannot compute PPPM G</I>

			<DD>LAMMPS failed to compute a valid approximation for the PPPM g_ewald
			factor that partitions the computation between real space and k-space.

			<DT><I>Cannot create an atom map unless atoms have IDs</I>

			<DD>The simulation requires a mapping from global atom IDs to local atoms,
			but the atoms that have been defined have no IDs.

			<DT><I>Cannot create atoms with undefined lattice</I>

			<DD>Must use the lattice command before using the create_atoms
			command.

			<DT><I>Cannot create_box after simulation box is defined</I>

			<DD>The create_box command cannot be used after a read_data, read_restart,
			or create_box command.

			<DT><I>Cannot delete group all</I>

			<DD>Self-explanatory.

			<DT><I>Cannot delete group currently used by a compute</I>

			<DD>Self-explanatory.

			<DT><I>Cannot delete group currently used by a dump</I>

			<DD>Self-explanatory.

			<DT><I>Cannot delete group currently used by a fix</I>

			<DD>Self-explanatory.

			<DT><I>Cannot delete group currently used by atom_modify first</I>

			<DD>Self-explanatory.

			<DT><I>Cannot displace_box on a non-periodic boundary</I>

			<DD>Self-explanatory.

			<DT><I>Cannot evaporate atoms in atom_modify first group</I>

			<DD>This is a restriction due to the way atoms are organized in
			a list to enable the atom_modify first command.

			<DT><I>Cannot find delete_bonds group ID</I>

			<DD>Group ID used in the delete_bonds command does not exist.

			<DT><I>Cannot fix deform on a non-periodic boundary</I>

			<DD>Only a periodic boundary can be modified.

			<DT><I>Cannot have both pair_modify shift and tail set to yes</I>

			<DD>These 2 options are contradictory.

			<DT><I>Cannot open AIREBO potential file %s</I>

			<DD>Self-explanatory.

			<DT><I>Cannot open EAM potential file %s</I>

			<DD>The specified EAM potential file cannot be opened. Check that the
			path and name are correct.

			<DT><I>Cannot open MEAM potential file %s</I>

			<DD>The specified MEAM potential file cannot be opened. Check that the
			path and name are correct.

			<DT><I>Cannot open Stillinger-Weber potential file %s</I>

			<DD>The specified SW potential file cannot be opened. Check that the path
			and name are correct.

			<DT><I>Cannot open Tersoff potential file %s</I>

			<DD>The specified Tersoff potential file cannot be opened. Check that the
			path and name are correct.

			<DT><I>Cannot open dir to search for restart file</I>

			<DD>Using a "*" in the name of the restart file will open the current
			directory to search for matching file names.

			<DT><I>Cannot open dump file</I>

			<DD>The output file for the dump command cannot be opened. Check that the
			path and name are correct.

			<DT><I>Cannot open file %s</I>

			<DD>The specified file cannot be opened. Check that the path and name are
			correct.

			<DT><I>Cannot open fix ave/histo file %s</I>

			<DD>The specified file cannot be opened. Check that the path and name are
			correct.

			<DT><I>Cannot open fix ave/spatial file %s</I>

			<DD>The specified file cannot be opened. Check that the path and name are
			correct.

			<DT><I>Cannot open fix ave/time file %s</I>

			<DD>The specified file cannot be opened. Check that the path and name are
			correct.

			<DT><I>Cannot open fix poems file %s</I>

			<DD>The specified file cannot be opened. Check that the path and name are
			correct.

			<DT><I>Cannot open fix print file %s</I>

			<DD>The output file generated by the fix print command cannot be opened

			<DT><I>Cannot open fix reax/bonds file %s</I>

			<DD>The output file for the fix reax/bonds command cannot be opened.
			Check that the path and name are correct.

			<DT><I>Cannot open fix tmd file %s</I>

			<DD>The output file for the fix tmd command cannot be opened. Check that
			the path and name are correct.

			<DT><I>Cannot open fix ttm file %s</I>

			<DD>The output file for the fix ttm command cannot be opened. Check that
			the path and name are correct.

			<DT><I>Cannot open gzipped file</I>

			<DD>LAMMPS is attempting to open a gzipped version of the specified file
			but was unsuccessful. Check that the path and name are correct.

			<DT><I>Cannot open input script %s</I>

			<DD>Self-explanatory.

			<DT><I>Cannot open log.lammps</I>

			<DD>The default LAMMPS log file cannot be opened. Check that the
			directory you are running in allows for files to be created.

			<DT><I>Cannot open logfile %s</I>

			<DD>The LAMMPS log file specified in the input script cannot be opened.
			Check that the path and name are correct.

			<DT><I>Cannot open logfile</I>

			<DD>The LAMMPS log file named in a command-line argument cannot be opened.
			Check that the path and name are correct.

			<DT><I>Cannot open pair_write file</I>

			<DD>The specified output file for pair energies and forces cannot be
			opened. Check that the path and name are correct.

			<DT><I>Cannot open restart file %s</I>

			<DD>Self-explanatory.

			<DT><I>Cannot open screen file</I>

			<DD>The screen file specified as a command-line argument cannot be
			opened. Check that the directory you are running in allows for files
			to be created.

			<DT><I>Cannot open universe log file</I>

			<DD>For a multi-partition run, the master log file cannot be opened.
			Check that the directory you are running in allows for files to be
			created.

			<DT><I>Cannot open universe screen file</I>

			<DD>For a multi-partition run, the master screen file cannot be opened.
			Check that the directory you are running in allows for files to be
			created.

			<DT><I>Cannot read_data after simulation box is defined</I>

			<DD>The read_data command cannot be used after a read_data,
			read_restart, or create_box command.

			<DT><I>Cannot read_restart after simulation box is defined</I>

			<DD>The read_restart command cannot be used after a read_data,
			read_restart, or create_box command.

			<DT><I>Cannot redefine variable as a different style</I>

			<DD>An equal-style variable can be re-defined but only if it was
			originally an equal-style variable.

			<DT><I>Cannot replicate 2d simulation in z dimension</I>

			<DD>The replicate command cannot replicate a 2d simulation in the z
			dimension.

			<DT><I>Cannot replicate with fixes that store atom quantities</I>

			<DD>Either fixes are defined that create and store atom-based vectors or a
			restart file was read which included atom-based vectors for fixes.
			The replicate command cannot duplicate that information for new atoms.
			You should use the replicate command before fixes are applied to the
			system.

			<DT><I>Cannot reset timestep with a dynamic region defined</I>

			<DD>Dynamic regions (see the region command) have a time dependence.
			Thus you cannot change the timestep when one or more of these
			are defined.

			<DT><I>Cannot reset timestep with a time-dependent fix defined</I>

			<DD>You cannot reset the timestep when a fix that keeps track of elapsed
			time is in place.

			<DT><I>Cannot reset timestep with dump file already written to</I>

			<DD>Changing the timestep will confuse when a dump file is written. Use
			the undump command, then restart the dump file.

			<DT><I>Cannot reset timestep with restart file already written</I>

			<DD>Changing the timestep will confuse when a restart file is written.
			Use the "restart 0" command to turn off restarts, then start them
			again.

			<DT><I>Cannot run 2d simulation with nonperiodic Z dimension</I>

			<DD>Use the boundary command to make the z dimension periodic in order to
			run a 2d simulation.

			<DT><I>Cannot set both respa pair and inner/middle/outer</I>

			<DD>In the rRESPA integrator, you must compute pairwise potentials either
			all together (pair), or in pieces (inner/middle/outer). You can't do
			both.

			<DT><I>Cannot set both vel and wiggle in fix wall command</I>

			<DD>Self-explantory.

			<DT><I>Cannot set dipole for this atom style</I>

			<DD>This atom style does not support dipole settings for each atom type.

			<DT><I>Cannot set dump_modify flush for dump xtc</I>

			<DD>Self-explanatory.

			<DT><I>Cannot set mass for this atom style</I>

			<DD>This atom style does not support mass settings for each atom type.
			Instead they are defined on a per-atom basis in the data file.

			<DT><I>Cannot set respa middle without inner/outer</I>

			<DD>In the rRESPA integrator, you must define both a inner and outer
			setting in order to use a middle setting.

			<DT><I>Cannot set shape for this atom style</I>

			<DD>The atom style does not support this setting.

			<DT><I>Cannot set this attribute for this atom style</I>

			<DD>The attribute being set does not exist for the defined atom style.

			<DT><I>Cannot skew triclinic box in z for 2d simulation</I>

			<DD>Self-explanatory.

			<DT><I>Cannot use Ewald with 2d simulation</I>

			<DD>The kspace style ewald cannot be used in 2d simulations. You can use
			2d Ewald in a 3d simulation; see the kspace_modify command.

			<DT><I>Cannot use Ewald with triclinic box</I>

			<DD>This feature is not yet supported.

			<DT><I>Cannot use PPPM with 2d simulation</I>

			<DD>The kspace style pppm cannot be used in 2d simulations. You can use
			2d PPPM in a 3d simulation; see the kspace_modify command.

			<DT><I>Cannot use PRD with a time-dependent fix defined</I>

			<DD>PRD alters the timestep in ways that will mess up these fixes.

			<DT><I>Cannot use PRD with a time-dependent region defined</I>

			<DD>PRD alters the timestep in ways that will mess up these regions.

			<DT><I>Cannot use PRD with atom_modify sort enabled</I>

			<DD>This is a current restriction of PRD. You must turn off sorting,
			which is enabled by default, via the atom_modify command.

			<DT><I>Cannot use PRD with multi-proc replicas unless atom map exists</I>

			<DD>Use the atom_modify command to create an atom map.

			<DT><I>Cannot use delete_atoms unless atoms have IDs</I>

			<DD>Your atoms do not have IDs, so the delete_atoms command cannot be
			used.

			<DT><I>Cannot use delete_bonds with non-molecular system</I>

			<DD>Your choice of atom style does not have bonds.

			<DT><I>Cannot use fix TMD unless atom map exists</I>

			<DD>Using this fix requires the ability to lookup an atom index, which is
			provided by an atom map. An atom map does not exist (by default) for
			non-molecular problems. Using the atom_modify map command will force
			an atom map to be created.

			<DT><I>Cannot use fix bond/break with non-molecular systems</I>

			<DD>Self-explanatory.

			<DT><I>Cannot use fix bond/create with non-molecular systems</I>

			<DD>Self-explanatory.

			<DT><I>Cannot use fix box/relax on a non-periodic dimension</I>

			<DD>Only periodic dimensions can be controlled with this fix.

			<DT><I>Cannot use fix deform trate on a box with zero tilt</I>

			<DD>The trate style alters the current strain.

			<DT><I>Cannot use fix enforce2d with 3d simulation</I>

			<DD>Self-explanatory.

			<DT><I>Cannot use fix nph on a non-periodic dimension</I>

			<DD>Only periodic dimensions can be controlled with this fix.

			<DT><I>Cannot use fix nph with triclinic box</I>

			<DD>This feature is not yet supported.

			<DT><I>Cannot use fix npt and fix deform on same dimension</I>

			<DD>These commands both change the box size/shape, so you cannot use both
			together.

			<DT><I>Cannot use fix npt on a non-periodic dimension</I>

			<DD>Only periodic dimensions can be controlled with this fix.

			<DT><I>Cannot use fix npt with triclinic box</I>

			<DD>This feature is not yet supported.

			<DT><I>Cannot use fix pour with triclinic box</I>

			<DD>This feature is not yet supported.

			<DT><I>Cannot use fix press/berendsen and fix deform on same dimension</I>

			<DD>Self-explanatory.

			<DT><I>Cannot use fix press/berendsen on a non-periodic dimension</I>

			<DD>Self-explanatory.

			<DT><I>Cannot use fix press/berendsen with triclinic box</I>

			<DD>Self-explanatory.

			<DT><I>Cannot use fix reax/bonds without pair_style reax</I>

			<DD>Self-explantory.

			<DT><I>Cannot use fix shake with non-molecular system</I>

			<DD>Your choice of atom style does not have bonds.

			<DT><I>Cannot use fix ttm with 2d simulation</I>

			<DD>This is a current restriction of this fix due to the grid it creates.

			<DT><I>Cannot use fix ttm with triclinic box</I>

			<DD>This is a current restriction of this fix due to the grid it creates.

			<DT><I>Cannot use fix wall in periodic dimension</I>

			<DD>Self-explanatory.

			<DT><I>Cannot use fix wall zlo/zhi for a 2d simulation</I>

			<DD>Self-explanatory.

			<DT><I>Cannot use kspace solver on system with no charge</I>

			<DD>No atoms in system have a non-zero charge.

			<DT><I>Cannot use neighbor bins - box size << cutoff</I>

			<DD>Too many neighbor bins will be created. This typically happens when
			the simulation box is very small in some dimension, compared to the
			neighbor cutoff. Use the "nsq" style instead of "bin" style.

			<DT><I>Cannot use newton pair with GPU GayBerne pair style</I>

			<DD>Self-explanatory.

			<DT><I>Cannot use newton pair with GPU lj/cut pair style</I>

			<DD>Self-explanatory.

			<DT><I>Cannot use nonperiodic boundares with fix ttm</I>

			<DD>This fix requires a fully periodic simulation box.

			<DT><I>Cannot use nonperiodic boundaries with Ewald</I>

			<DD>For kspace style ewald, all 3 dimensions must have periodic boundaries
			unless you use the kspace_modify command to define a 2d slab with a
			non-periodic z dimension.

			<DT><I>Cannot use nonperiodic boundaries with PPPM</I>

			<DD>For kspace style pppm, all 3 dimensions must have periodic boundaries
			unless you use the kspace_modify command to define a 2d slab with a
			non-periodic z dimension.

			<DT><I>Cannot use pair hybrid with multiple GPU pair styles</I>

			<DD>Self-explanatory.

			<DT><I>Cannot use pair tail corrections with 2d simulations</I>

			<DD>The correction factors are only currently defined for 3d systems.

			<DT><I>Cannot use region INF or EDGE when box does not exist</I>

			<DD>Regions that extend to the box boundaries can only be used after the
			create_box command has been used.

			<DT><I>Cannot use set atom with no atom IDs defined</I>

			<DD>Atom IDs are not defined, so they cannot be used to identify an atom.

			<DT><I>Cannot use velocity create loop all unless atoms have IDs</I>

			<DD>Atoms in the simulation to do not have IDs, so this style
			of velocity creation cannot be performed.

			<DT><I>Cannot use wall in periodic dimension</I>

			<DD>Self-explanatory.

			<DT><I>Cannot wiggle and shear fix wall/gran</I>

			<DD>Cannot specify both options at the same time.

			<DT><I>Cannot zero momentum of 0 atoms</I>

			<DD>The collection of atoms for which momentum is being computed has no
			atoms.

			<DT><I>Change_box command before simulation box is defined</I>

			<DD>Self-explanatory.

			<DT><I>Change_box operation is invalid</I>

			<DD>Cannot change orthogonal box to orthogonal or a triclinic box to
			triclinic.

			<DT><I>Communicate group != atom_modify first group</I>

			<DD>Self-explanatory.

			<DT><I>Compute ID for compute heat/flux does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Compute ID for compute reduce does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Compute ID for fix ave/atom does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Compute ID for fix ave/histo does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Compute ID for fix ave/spatial does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Compute ID for fix ave/time does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Compute ID must be alphanumeric or underscore characters</I>

			<DD>Self-explanatory.

			<DT><I>Compute angle/local used when angles are not allowed</I>

			<DD>The atom style does not support angles.

			<DT><I>Compute bond/local used when bonds are not allowed</I>

			<DD>The atom style does not support bonds.

			<DT><I>Compute centro/atom requires a pair style be defined</I>

			<DD>This is because the computation of the centro-symmetry values
			uses a pairwise neighbor list.

			<DT><I>Compute cna/atom cutoff is longer than pairwise cutoff</I>

			<DD>Self-explantory.

			<DT><I>Compute cna/atom requires a pair style be defined</I>

			<DD>Self-explantory.

			<DT><I>Compute com/molecule requires molecular atom style</I>

			<DD>Self-explanatory.

			<DT><I>Compute coord/atom cutoff is longer than pairwise cutoff</I>

			<DD>Cannot compute coordination at distances longer than the pair cutoff,
			since those atoms are not in the neighbor list.

			<DT><I>Compute coord/atom requires a pair style be defined</I>

			<DD>Self-explantory.

			<DT><I>Compute damage/atom requires peridynamic potential</I>

			<DD>Damage is a Peridynamic-specific metric. It requires you
			to be running a Peridynamics simulation.

			<DT><I>Compute dihedral/local used when dihedrals are not allowed</I>

			<DD>The atom style does not support dihedrals.

			<DT><I>Compute does not allow an extra compute or fix to be reset</I>

			<DD>This is an internal LAMMPS error. Please report it to the
			developers.

			<DT><I>Compute erotate/asphere cannot be used with atom attributes diameter or rmass</I>

			<DD>These attributes override the shape and mass settings, so cannot be
			used.

			<DT><I>Compute erotate/asphere requires atom attributes angmom, quat, shape</I>

			<DD>An atom style that defines these attributes must be used.

			<DT><I>Compute erotate/asphere requires extended particles</I>

			<DD>This compute cannot be used with point paritlces.

			<DT><I>Compute erotate/sphere requires atom attribute omega</I>

			<DD>An atom style that defines this attribute must be used.

			<DT><I>Compute erotate/sphere requires atom attribute radius or shape</I>

			<DD>An atom style that defines these attributes must be used.

			<DT><I>Compute erotate/sphere requires spherical particle shapes</I>

			<DD>Self-explanatory.

			<DT><I>Compute event/displace has invalid fix event assigned</I>

			<DD>This is an internal LAMMPS error. Please report it to the
			developers.

			<DT><I>Compute group/group group ID does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Compute gyration/molecule requires molecular atom style</I>

			<DD>Self-explanatory.

			<DT><I>Compute heat/flux compute ID does not compute pe/atom</I>

			<DD>Self-explanatory.

			<DT><I>Compute heat/flux requires ghost atoms store velocity</I>

			<DD>Use the communicate vel yes command to enable this.

			<DT><I>Compute improper/local used when impropers are not allowed</I>

			<DD>The atom style does not support impropers.

			<DT><I>Compute msd/molecule requires molecular atom style</I>

			<DD>Self-explanatory.

			<DT><I>Compute pe must use group all</I>

			<DD>Energies computed by potentials (pair, bond, etc) are computed on all
			atoms.

			<DT><I>Compute pressure must use group all</I>

			<DD>Virial contributions computed by potentials (pair, bond, etc) are
			computed on all atoms.

			<DT><I>Compute pressure temperature ID does not compute temperature</I>

			<DD>The compute ID assigned to a pressure computation must compute
			temperature.

			<DT><I>Compute property/atom for atom property that isn't allocated</I>

			<DD>Self-explanatory.

			<DT><I>Compute property/local cannot use these inputs together</I>

			<DD>Only inputs that generate the same number of datums can be used
			togther. E.g. bond and angle quantities cannot be mixed.

			<DT><I>Compute property/local for property that isn't allocated</I>

			<DD>Self-explanatory.

			<DT><I>Compute property/molecule requires molecular atom style</I>

			<DD>Self-explanatory.

			<DT><I>Compute rdf requires a pair style be defined</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce compute array is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce compute does not calculate a global array</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce compute does not calculate a global vector</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce compute does not calculate a local array</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce compute does not calculate a local vector</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce compute does not calculate a per-atom array</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce compute does not calculate a per-atom vector</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce fix array is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce fix does not calculate a global array</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce fix does not calculate a global vector</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce fix does not calculate a local array</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce fix does not calculate a local vector</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce fix does not calculate a per-atom array</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce fix does not calculate a per-atom vector</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce region ID does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce replace requires min or max mode</I>

			<DD>Self-explanatory.

			<DT><I>Compute reduce variable is not atom-style variable</I>

			<DD>Self-explanatory.

			<DT><I>Compute temp/asphere cannot be used with atom attributes diameter or rmass</I>

			<DD>These attributes override the shape and mass settings, so cannot be
			used.

			<DT><I>Compute temp/asphere requires atom attributes angmom, quat, shape</I>

			<DD>An atom style that defines these attributes must be used.

			<DT><I>Compute temp/asphere requires extended particles</I>

			<DD>This compute cannot be used with point paritlces.

			<DT><I>Compute temp/partial cannot use vz for 2d systemx</I>

			<DD>Self-explanatory.

			<DT><I>Compute temp/profile cannot bin z for 2d systems</I>

			<DD>Self-explanatory.

			<DT><I>Compute temp/profile cannot use vz for 2d systemx</I>

			<DD>Self-explanatory.

			<DT><I>Compute temp/sphere requires atom attribute omega</I>

			<DD>An atom style that defines this attribute must be used.

			<DT><I>Compute temp/sphere requires atom attribute radius or shape</I>

			<DD>An atom style that defines these attributes must be used.

			<DT><I>Compute temp/sphere requires spherical particle shapes</I>

			<DD>Self-explanatory.

			<DT><I>Compute used in variable between runs is not current</I>

			<DD>Computes cannot be invoked by a variable in between runs. Thus they
			must have been evaluated on the last timestep of the previous run in
			order for their value(s) to be accessed. See the doc page for the
			variable command for more info.

			<DT><I>Compute used in variable thermo keyword between runs is not current</I>

			<DD>Some thermo keywords rely on a compute to calculate their value(s).
			Computes cannot be invoked by a variable in between runs. Thus they
			must have been evaluated on the last timestep of the previous run in
			order for their value(s) to be accessed. See the doc page for the
			variable command for more info.

			<DT><I>Computed temperature for fix temp/berendsen cannot be 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Computed temperature for fix temp/rescale cannot be 0.0</I>

			<DD>Cannot rescale the temperature to a new value if the current
			temperature is 0.0.

			<DT><I>Could not count initial bonds in fix bond/create</I>

			<DD>Could not find one of the atoms in a bond on this processor.

			<DT><I>Could not create 3d FFT plan</I>

			<DD>The FFT setup in pppm failed.

			<DT><I>Could not create 3d remap plan</I>

			<DD>The FFT setup in pppm failed.

			<DT><I>Could not find atom_modify first group ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find compute ID for PRD</I>

			<DD>Self-explanatory.

			<DT><I>Could not find compute ID for temperature bias</I>

			<DD>Self-explanatory.

			<DT><I>Could not find compute ID to delete</I>

			<DD>Self-explanatory.

			<DT><I>Could not find compute displace/atom fix ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find compute event/displace fix ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find compute group ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find compute heat/flux compute ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find compute msd fix ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find compute pressure temperature ID</I>

			<DD>The compute ID for calculating temperature does not exist.

			<DT><I>Could not find compute_modify ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find delete_atoms group ID</I>

			<DD>Group ID used in the delete_atoms command does not exist.

			<DT><I>Could not find delete_atoms region ID</I>

			<DD>Region ID used in the delete_atoms command does not exist.

			<DT><I>Could not find displace_atoms group ID</I>

			<DD>Group ID used in the displace_atoms command does not exist.

			<DT><I>Could not find displace_box group ID</I>

			<DD>Group ID used in the displace_box command does not exist.

			<DT><I>Could not find dump cfg compute ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find dump cfg fix ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find dump cfg variable name</I>

			<DD>Self-explanatory.

			<DT><I>Could not find dump custom compute ID</I>

			<DD>The compute ID needed by dump custom to compute a per-atom quantity
			does not exist.

			<DT><I>Could not find dump custom fix ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find dump custom variable name</I>

			<DD>Self-explanatory.

			<DT><I>Could not find dump group ID</I>

			<DD>A group ID used in the dump command does not exist.

			<DT><I>Could not find dump local compute ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find dump local fix ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find dump modify compute ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find dump modify fix ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find dump modify variable name</I>

			<DD>Self-explanatory.

			<DT><I>Could not find fix ID to delete</I>

			<DD>Self-explanatory.

			<DT><I>Could not find fix group ID</I>

			<DD>A group ID used in the fix command does not exist.

			<DT><I>Could not find fix poems group ID</I>

			<DD>A group ID used in the fix poems command does not exist.

			<DT><I>Could not find fix recenter group ID</I>

			<DD>A group ID used in the fix recenter command does not exist.

			<DT><I>Could not find fix rigid group ID</I>

			<DD>A group ID used in the fix rigid command does not exist.

			<DT><I>Could not find fix_modify ID</I>

			<DD>A fix ID used in the fix_modify command does not exist.

			<DT><I>Could not find fix_modify pressure ID</I>

			<DD>The compute ID for computing pressure does not exist.

			<DT><I>Could not find fix_modify temperature ID</I>

			<DD>The compute ID for computing temperature does not exist.

			<DT><I>Could not find group delete group ID</I>

			<DD>Self-explanatory.

			<DT><I>Could not find set group ID</I>

			<DD>Group ID specified in set command does not exist.

			<DT><I>Could not find thermo compute ID</I>

			<DD>Compute ID specified in thermo_style command does not exist.

			<DT><I>Could not find thermo custom compute ID</I>

			<DD>The compute ID needed by thermo style custom to compute a requested
			quantity does not exist.

			<DT><I>Could not find thermo custom fix ID</I>

			<DD>The fix ID needed by thermo style custom to compute a requested
			quantity does not exist.

			<DT><I>Could not find thermo custom variable name</I>

			<DD>Self-explanatory.

			<DT><I>Could not find thermo fix ID</I>

			<DD>Fix ID specified in thermo_style command does not exist.

			<DT><I>Could not find thermo_modify pressure ID</I>

			<DD>The compute ID needed by thermo style custom to compute pressure does
			not exist.

			<DT><I>Could not find thermo_modify temperature ID</I>

			<DD>The compute ID needed by thermo style custom to compute temperature does
			not exist.

			<DT><I>Could not find undump ID</I>

			<DD>A dump ID used in the undump command does not exist.

			<DT><I>Could not find velocity group ID</I>

			<DD>A group ID used in the velocity command does not exist.

			<DT><I>Could not find velocity temperature ID</I>

			<DD>The compute ID needed by the velocity command to compute temperature
			does not exist.

			<DT><I>Could not set finite-size particle attribute in fix rigid</I>

			<DD>The particle has a finite size but its attributes could not be
			determined.

			<DT><I>Coulomb cutoffs of pair hybrid sub-styles do not match</I>

			<DD>If using a Kspace solver, all Coulomb cutoffs of long pair styles must
			be the same.

			<DT><I>Cound not find dump_modify ID</I>

			<DD>Self-explanatory.

			<DT><I>Create_atoms command before simulation box is defined</I>

			<DD>The create_atoms command cannot be used before a read_data,
			read_restart, or create_box command.

			<DT><I>Create_atoms region ID does not exist</I>

			<DD>A region ID used in the create_atoms command does not exist.

			<DT><I>Create_box region ID does not exist</I>

			<DD>A region ID used in the create_box command does not exist.

			<DT><I>Create_box region does not support a bounding box</I>

			<DD>Not all regions represent bounded volumes. You cannot use
			such a region with the create_box command.

			<DT><I>Cyclic loop in joint connections</I>

			<DD>Fix poems cannot (yet) work with coupled bodies whose joints connect
			the bodies in a ring (or cycle).

			<DT><I>Degenerate lattice primitive vectors</I>

			<DD>Invalid set of 3 lattice vectors for lattice command.

			<DT><I>Delete_atoms command before simulation box is defined</I>

			<DD>The delete_atoms command cannot be used before a read_data,
			read_restart, or create_box command.

			<DT><I>Delete_atoms cutoff > neighbor cutoff</I>

			<DD>Cannot delete atoms further away than a processor knows about.

			<DT><I>Delete_atoms requires a pair style be defined</I>

			<DD>This is because atom deletion within a cutoff uses a pairwise
			neighbor list.

			<DT><I>Delete_bonds command before simulation box is defined</I>

			<DD>The delete_bonds command cannot be used before a read_data,
			read_restart, or create_box command.

			<DT><I>Delete_bonds command with no atoms existing</I>

			<DD>No atoms are yet defined so the delete_bonds command cannot be used.

			<DT><I>Deposition region extends outside simulation box</I>

			<DD>Self-explanatory.

			<DT><I>Did not assign all atoms correctly</I>

			<DD>Atoms read in from a data file were not assigned correctly to
			processors. This is likely due to some atom coordinates being
			outside a non-periodic simulation box.

			<DT><I>Did not find all elements in MEAM library file</I>

			<DD>The requested elements were not found in the MEAM file.

			<DT><I>Did not find fix shake partner info</I>

			<DD>Could not find bond partners implied by fix shake command. This error
			can be triggered if the delete_bonds command was used before fix
			shake, and it removed bonds without resetting the 1-2, 1-3, 1-4
			weighting list via the special keyword.

			<DT><I>Did not find keyword in table file</I>

			<DD>Keyword used in pair_coeff command was not found in table file.

			<DT><I>Dihedral atom missing in delete_bonds</I>

			<DD>The delete_bonds command cannot find one or more atoms in a particular
			dihedral on a particular processor. The pairwise cutoff is too short
			or the atoms are too far apart to make a valid dihedral.

			<DT><I>Dihedral atom missing in set command</I>

			<DD>The set command cannot find one or more atoms in a particular dihedral
			on a particular processor. The pairwise cutoff is too short or the
			atoms are too far apart to make a valid dihedral.

			<DT><I>Dihedral atoms %d %d %d %d missing on proc %d at step %d</I>

			<DD>One or more of 4 atoms needed to compute a particular dihedral are
			missing on this processor. Typically this is because the pairwise
			cutoff is set too short or the dihedral has blown apart and an atom is
			too far away.

			<DT><I>Dihedral charmm is incompatible with Pair style</I>

			<DD>Dihedral style charmm must be used with a pair style charmm
			in order for the 1-4 epsilon/sigma parameters to be defined.

			<DT><I>Dihedral coeff for hybrid has invalid style</I>

			<DD>Dihedral style hybrid uses another dihedral style as one of its
			coefficients. The dihedral style used in the dihedral_coeff command
			or read from a restart file is not recognized.

			<DT><I>Dihedral coeffs are not set</I>

			<DD>No dihedral coefficients have been assigned in the data file or via
			the dihedral_coeff command.

			<DT><I>Dihedral style hybrid cannot have hybrid as an argument</I>

			<DD>Self-explanatory.

			<DT><I>Dihedral style hybrid cannot have none as an argument</I>

			<DD>Self-explanatory.

			<DT><I>Dihedral style hybrid cannot use same dihedral style twice</I>

			<DD>Self-explanatory.

			<DT><I>Dihedral_coeff command before dihedral_style is defined</I>

			<DD>Coefficients cannot be set in the data file or via the dihedral_coeff
			command until an dihedral_style has been assigned.

			<DT><I>Dihedral_coeff command before simulation box is defined</I>

			<DD>The dihedral_coeff command cannot be used before a read_data,
			read_restart, or create_box command.

			<DT><I>Dihedral_coeff command when no dihedrals allowed</I>

			<DD>The chosen atom style does not allow for dihedrals to be defined.

			<DT><I>Dihedral_style command when no dihedrals allowed</I>

			<DD>The chosen atom style does not allow for dihedrals to be defined.

			<DT><I>Dihedrals assigned incorrectly</I>

			<DD>Dihedrals read in from the data file were not assigned correctly to
			atoms. This means there is something invalid about the topology
			definitions.

			<DT><I>Dihedrals defined but no dihedral types</I>

			<DD>The data file header lists dihedrals but no dihedral types.

			<DT><I>Dimension command after simulation box is defined</I>

			<DD>The dimension command cannot be used after a read_data,
			read_restart, or create_box command.

			<DT><I>Dipole command before simulation box is defined</I>

			<DD>The dipole command cannot be used before a read_data,
			read_restart, or create_box command.

			<DT><I>Displace_atoms command before simulation box is defined</I>

			<DD>The displace_atoms command cannot be used before a read_data,
			read_restart, or create_box command.

			<DT><I>Displace_box command before simulation box is defined</I>

			<DD>Self-explanatory.

			<DT><I>Displace_box tilt factors require triclinic box</I>

			<DD>Cannot use tilt factors unless the simulation box is
			non-orthogonal.

			<DT><I>Distance must be > 0 for compute event/displace</I>

			<DD>Self-explanatory.

			<DT><I>Divide by 0 in variable formula</I>

			<DD>Self-explanatory.

			<DT><I>Domain too large for neighbor bins</I>

			<DD>The domain has become extremely large so that neighbor bins cannot be
			used. Most likely, one or more atoms have been blown out of the
			simulation box to a great distance.

			<DT><I>Dump cfg and fix not computed at compatible times</I>

			<DD>The fix must produce per-atom quantities on timesteps that dump cfg
			needs them.

			<DT><I>Dump cfg arguments must start with 'id type xs ys zs'</I>

			<DD>This is a requirement of the CFG output format.

			<DT><I>Dump custom and fix not computed at compatible times</I>

			<DD>The fix must produce per-atom quantities on timesteps that dump custom
			needs them.

			<DT><I>Dump custom compute does not calculate per-atom array</I>

			<DD>Self-explanatory.

			<DT><I>Dump custom compute does not calculate per-atom vector</I>

			<DD>Self-explanatory.

			<DT><I>Dump custom compute does not compute per-atom info</I>

			<DD>Self-explanatory.

			<DT><I>Dump custom compute vector is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Dump custom fix does not compute per-atom array</I>

			<DD>Self-explanatory.

			<DT><I>Dump custom fix does not compute per-atom info</I>

			<DD>Self-explanatory.

			<DT><I>Dump custom fix does not compute per-atom vector</I>

			<DD>Self-explanatory.

			<DT><I>Dump custom fix vector is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Dump custom variable is not atom-style variable</I>

			<DD>Only atom-style variables generate per-atom quantities, needed for
			dump output.

			<DT><I>Dump dcd cannot dump unwrapped coords with triclinic box</I>

			<DD>Cannot use unwrap option with non-orthogonal simulation box.

			<DT><I>Dump xtc cannot dump unwrapped coords with triclinic box</I>

			<DD>Cannot use unwrap option with non-orthogonal simulation box.

			<DT><I>Dump dcd of non-matching # of atoms</I>

			<DD>Every snapshot written by dump dcd must contain the same # of atoms.

			<DT><I>Dump in CFG format requires one snapshot per file</I>

			<DD>Self-explanatory.

			<DT><I>Dump local and fix not computed at compatible times</I>

			<DD>The fix must produce per-atom quantities on timesteps that dump local
			needs them.

			<DT><I>Dump local attributes contain no compute or fix</I>

			<DD>Self-explanatory.

			<DT><I>Dump local compute does not calculate local array</I>

			<DD>Self-explanatory.

			<DT><I>Dump local compute does not calculate local vector</I>

			<DD>Self-explanatory.

			<DT><I>Dump local compute does not compute local info</I>

			<DD>Self-explanatory.

			<DT><I>Dump local compute vector is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Dump local count is not consistent across input fields</I>

			<DD>Every column of output must be the same length.

			<DT><I>Dump local fix does not compute local array</I>

			<DD>Self-explanatory.

			<DT><I>Dump local fix does not compute local info</I>

			<DD>Self-explanatory.

			<DT><I>Dump local fix does not compute local vector</I>

			<DD>Self-explanatory.

			<DT><I>Dump local fix vector is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Dump modify compute ID does not compute per-atom array</I>

			<DD>Self-explanatory.

			<DT><I>Dump modify compute ID does not compute per-atom info</I>

			<DD>Self-explanatory.

			<DT><I>Dump modify compute ID does not compute per-atom vector</I>

			<DD>Self-explanatory.

			<DT><I>Dump modify compute ID vector is not large enough</I>

			<DD>Self-explanatory.

			<DT><I>Dump modify element names do not match atom types</I>

			<DD>Number of element names must equal number of atom types.

			<DT><I>Dump modify fix ID does not compute per-atom array</I>

			<DD>Self-explanatory.

			<DT><I>Dump modify fix ID does not compute per-atom info</I>

			<DD>Self-explanatory.

			<DT><I>Dump modify fix ID does not compute per-atom vector</I>

			<DD>Self-explanatory.

			<DT><I>Dump modify fix ID vector is not large enough</I>

			<DD>Self-explanatory.

			<DT><I>Dump modify variable is not atom-style variable</I>

			<DD>Self-explanatory.

			<DT><I>Dump xtc must use group all</I>

			<DD>Self-explanatory.

			<DT><I>Dump xtc must use group all</I>

			<DD>Self-explanatory.

			<DT><I>Dump_modify region ID does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Dumping an atom property that isn't allocated</I>

			<DD>The chosen atom style does not define the per-atom quantity being
			dumped.

			<DT><I>Electronic temperature dropped below zero</I>

			<DD>Something has gone wrong with the fix ttm electron temperature model.

			<DT><I>Empty brackets in input command</I>

			<DD>A value inside the brackets is required for this formula element.

			<DT><I>Energy was not tallied on needed timestep</I>

			<DD>You are using a thermo keyword that requires potentials to
			have tallied energy, but they didn't on this timestep. See the
			variable doc page for ideas on how to make this work.

			<DT><I>Expected floating point parameter in input script or data file</I>

			<DD>The quantity being read is an integer on non-numeric value.

			<DT><I>Expected integer parameter in input script or data file</I>

			<DD>The quantity being read is a floating point on non-numeric value.

			<DT><I>Failed to allocate %d bytes for array %s</I>

			<DD>Your LAMMPS simulation has run out of memory. You need to run a
			smaller simulation or on more processors.

			<DT><I>Failed to reallocate %d bytes for array %s</I>

			<DD>Your LAMMPS simulation has run out of memory. You need to run a
			smaller simulation or on more processors.

			<DT><I>Final box dimension due to fix deform is < 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Fix ID for compute reduce does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Fix ID for fix ave/atom does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Fix ID for fix ave/histo does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Fix ID for fix ave/spatial does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Fix ID for fix ave/time does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Fix ID must be alphanumeric or underscore characters</I>

			<DD>Self-explanatory.

			<DT><I>Fix addforce region ID does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/atom compute array is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/atom compute does not calculate a per-atom array</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/atom compute does not calculate a per-atom vector</I>

			<DD>A compute used by fix ave/atom must generate per-atom values.

			<DT><I>Fix ave/atom compute does not calculate per-atom values</I>

			<DD>A compute used by fix ave/atom must generate per-atom values.

			<DT><I>Fix ave/atom fix array is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/atom fix does not calculate a per-atom array</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/atom fix does not calculate a per-atom vector</I>

			<DD>A fix used by fix ave/atom must generate per-atom values.

			<DT><I>Fix ave/atom fix does not calculate per-atom values</I>

			<DD>A fix used by fix ave/atom must generate per-atom values.

			<DT><I>Fix ave/atom variable is not atom-style variable</I>

			<DD>A variable used by fix ave/atom must generate per-atom values.

			<DT><I>Fix ave/histo cannot input local values in scalar mode</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo cannot input per-atom values in scalar mode</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo compute array is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo compute does not calculate a global array</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo compute does not calculate a global scalar</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo compute does not calculate a global vector</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo compute does not calculate a local array</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo compute does not calculate a local vector</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo compute does not calculate a per-atom array</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo compute does not calculate a per-atom vector</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo compute does not calculate local values</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo compute does not calculate per-atom values</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo compute vector is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo fix array is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo fix does not calculate a global array</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo fix does not calculate a global scalar</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo fix does not calculate a global vector</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo fix does not calculate a local array</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo fix does not calculate a local vector</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo fix does not calculate a per-atom array</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo fix does not calculate a per-atom vector</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo fix does not calculate local values</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo fix does not calculate per-atom values</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo fix vector is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo input is invalid compute</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo input is invalid fix</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo input is invalid variable</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/histo inputs are not all global, peratom, or local</I>

			<DD>All inputs in a single fix ave/histo command must be of the
			same style.

			<DT><I>Fix ave/spatial compute does not calculate a per-atom array</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/spatial compute does not calculate a per-atom vector</I>

			<DD>A compute used by fix ave/spatial must generate per-atom values.

			<DT><I>Fix ave/spatial compute does not calculate per-atom values</I>

			<DD>A compute used by fix ave/spatial must generate per-atom values.

			<DT><I>Fix ave/spatial compute vector is accessed out-of-range</I>

			<DD>The index for the vector is out of bounds.

			<DT><I>Fix ave/spatial fix does not calculate a per-atom array</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/spatial fix does not calculate a per-atom vector</I>

			<DD>A fix used by fix ave/spatial must generate per-atom values.

			<DT><I>Fix ave/spatial fix does not calculate per-atom values</I>

			<DD>A fix used by fix ave/spatial must generate per-atom values.

			<DT><I>Fix ave/spatial fix vector is accessed out-of-range</I>

			<DD>The index for the vector is out of bounds.

			<DT><I>Fix ave/spatial for triclinic boxes requires units reduced</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/spatial settings invalid with changing box</I>

			<DD>If the ave setting is "running" or "window" and the box size/shape
			changes during the simulation, then the units setting must be
			"reduced", else the number of bins may change.

			<DT><I>Fix ave/spatial variable is not atom-style variable</I>

			<DD>A variable used by fix ave/spatial must generate per-atom values.

			<DT><I>Fix ave/time cannot set output array intensive/extensive from these inputs</I>

			<DD>One of more of the vector inputs has individual elements which are
			flagged as intensive or extensive. Such an input cannot be flagged as
			all intensive/extensive when turned into an array by fix ave/time.

			<DT><I>Fix ave/time cannot use variable with vector mode</I>

			<DD>Variables produce scalar values.

			<DT><I>Fix ave/time columns are inconsistent lengths</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/time compute array is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/time compute does not calculate a array</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/time compute does not calculate a scalar</I>

			<DD>Only computes that calculate a scalar or vector quantity (not a
			per-atom quantity) can be used with fix ave/time.

			<DT><I>Fix ave/time compute does not calculate a vector</I>

			<DD>Only computes that calculate a scalar or vector quantity (not a
			per-atom quantity) can be used with fix ave/time.

			<DT><I>Fix ave/time compute vector is accessed out-of-range</I>

			<DD>The index for the vector is out of bounds.

			<DT><I>Fix ave/time fix array is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/time fix does not calculate a array</I>

			<DD>Self-explanatory.

			<DT><I>Fix ave/time fix does not calculate a scalar</I>

			<DD>A fix used by fix ave/time must generate global values.

			<DT><I>Fix ave/time fix does not calculate a vector</I>

			<DD>A fix used by fix ave/time must generate global values.

			<DT><I>Fix ave/time fix vector is accessed out-of-range</I>

			<DD>The index for the vector is out of bounds.

			<DT><I>Fix ave/time variable is not equal-style variable</I>

			<DD>A variable used by fix ave/time must generate a global value.

			<DT><I>Fix aveforce region ID does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Fix bond/break requires special_bonds = 0,1,1</I>

			<DD>This is a restriction of the current fix bond/break implementation.

			<DT><I>Fix bond/create cutoff is longer than pairwise cutoff</I>

			<DD>This is not allowed because bond creation is done using the
			pairwise neighbor list.

			<DT><I>Fix bond/create requires special_bonds = 0,1,1</I>

			<DD>This is a restriction of the current fix bond/break implementation.

			<DT><I>Fix bond/swap cannot use dihedral or improper styles</I>

			<DD>These styles cannot be defined when using this fix.

			<DT><I>Fix bond/swap requires pair and bond styles</I>

			<DD>Self-explanatory.

			<DT><I>Fix bond/swap requires special_bonds = 0,1,1</I>

			<DD>Self-explanatory.

			<DT><I>Fix command before simulation box is defined</I>

			<DD>The fix command cannot be used before a read_data, read_restart, or
			create_box command.

			<DT><I>Fix deform is changing yz by too much with changing xy</I>

			<DD>When both yz and xy are changing, it induces changes in xz if the
			box must flip from one tilt extreme to another. Thus it is not
			allowed for yz to grow so much that a flip is induced.

			<DT><I>Fix deform tilt factors require triclinic box</I>

			<DD>Cannot deform the tilt factors of a simulation box unless it
			is a triclinic (non-orthogonal) box.

			<DT><I>Fix deform volume setting is invalid</I>

			<DD>Cannot use volume style unless other dimensions are being controlled.

			<DT><I>Fix deposit region ID does not exist</I>

			<DD>Self-explanatory

			<DT><I>Fix deposit region cannot be dynamic</I>

			<DD>Only static regions can be used with fix deposit.

			<DT><I>Fix deposit region does not support a bounding box</I>

			<DD>Not all regions represent bounded volumes. You cannot use
			such a region with the fix deposit command.

			<DT><I>Fix evaporate region ID does not exist</I>

			<DD>Self-explanatory

			<DT><I>Fix for fix ave/atom not computed at compatible time</I>

			<DD>Fixes generate their values on specific timesteps. Fix ave/atom is
			requesting a value on a non-allowed timestep.

			<DT><I>Fix for fix ave/histo not computed at compatible time</I>

			<DD>Fixes generate their values on specific timesteps. Fix ave/histo is
			requesting a value on a non-allowed timestep.

			<DT><I>Fix for fix ave/spatial not computed at compatible time</I>

			<DD>Fixes generate their values on specific timesteps. Fix ave/spatial is
			requesting a value on a non-allowed timestep.

			<DT><I>Fix for fix ave/time not computed at compatible time</I>

			<DD>Fixes generate their values on specific timesteps. Fix ave/time
			is requesting a value on a non-allowed timestep.

			<DT><I>Fix freeze requires atom attribute torque</I>

			<DD>The atom style defined does not have this attribute.

			<DT><I>Fix heat group has no atoms</I>

			<DD>Self-explanatory.

			<DT><I>Fix heat kinetic energy went negative</I>

			<DD>This will cause the velocity rescaling about to be performed by fix
			heat to be invalid.

			<DT><I>Fix in variable not computed at compatible time</I>

			<DD>Fixes generate their values on specific timesteps. The variable is
			requesting the values on a non-allowed timestep.

			<DT><I>Fix langevin period must be > 0.0</I>

			<DD>The time window for temperature relaxation must be > 0

			<DT><I>Fix momentum group has no atoms</I>

			<DD>Self-explanatory.

			<DT><I>Fix move cannot define z or vz variable for 2d problem</I>

			<DD>Self-explanatory.

			<DT><I>Fix move cannot have 0 length rotation vector</I>

			<DD>Self-explanatory.

			<DT><I>Fix move cannot rotate aroung non z-axis for 2d problem</I>

			<DD>Self-explanatory.

			<DT><I>Fix move cannot set linear z motion for 2d problem</I>

			<DD>Self-explanatory.

			<DT><I>Fix move cannot set wiggle z motion for 2d problem</I>

			<DD>Self-explanatory.

			<DT><I>Fix nph periods must be > 0.0</I>

			<DD>The time window for pressure relaxation must be > 0

			<DT><I>Fix npt periods must be > 0.0</I>

			<DD>The time window for temperature or pressure relaxation must be > 0

			<DT><I>Fix npt/asphere cannot be used with atom attributes diameter or rmass</I>

			<DD>An atom style that defines these attributes must be used.

			<DT><I>Fix npt/asphere requires atom attributes quat, angmom, torque, shape</I>

			<DD>An atom style that specifies these quantities is needed.

			<DT><I>Fix npt/sphere requires atom attribute radius or shape</I>

			<DD>An atom style that defines these attributes must be used.

			<DT><I>Fix npt/sphere requires atom attributes omega, torque</I>

			<DD>An atom style that specifies these quantities is needed.

			<DT><I>Fix nve/asphere cannot be used with atom attributes diameter or rmass</I>

			<DD>These attributes override the shape and mass settings, so cannot be
			used.

			<DT><I>Fix nve/asphere requires atom attributes angmom, quat, torque, shape</I>

			<DD>An atom style that specifies these quantities is needed.

			<DT><I>Fix nve/asphere requires extended particles</I>

			<DD>This fix can only be used for particles with a shape setting.

			<DT><I>Fix nve/sphere requires atom attribute mu</I>

			<DD>An atom style with this attribute is needed.

			<DT><I>Fix nve/sphere requires atom attribute radius or shape</I>

			<DD>An atom style that specifies these quantities is needed.

			<DT><I>Fix nve/sphere requires atom attributes omega, torque</I>

			<DD>An atom style with these attributes is needed.

			<DT><I>Fix nve/sphere requires extended particles</I>

			<DD>This fix can only be used for particles of a finite size.

			<DT><I>Fix nve/sphere requires spherical particle shapes</I>

			<DD>Self-explanatory.

			<DT><I>Fix nvt period must be > 0.0</I>

			<DD>The time window for temperature relaxation must be > 0

			<DT><I>Fix nvt/asphere cannot be used with atom attributes diameter or rmass</I>

			<DD>These attributes override the shape and mass settings, so cannot be
			used.

			<DT><I>Fix nvt/asphere requires atom attributes quat, angmom, torque, shape</I>

			<DD>An atom style that specifies these quantities is needed.

			<DT><I>Fix nvt/asphere requires extended particles</I>

			<DD>This fix can only be used for particles of a finite size.

			<DT><I>Fix nvt/sphere requires atom attribute radius or shape</I>

			<DD>An atom style with these attributes is needed.

			<DT><I>Fix nvt/sphere requires atom attributes omega, torque</I>

			<DD>An atom style with these attributes is needed.

			<DT><I>Fix nvt/sphere requires extended particles</I>

			<DD>This fix can only be used for particles of a finite size.

			<DT><I>Fix nvt/sphere requires spherical particle shapes</I>

			<DD>Self-explanatory.

			<DT><I>Fix orient/fcc file open failed</I>

			<DD>The fix orient/fcc command could not open a specified file.

			<DT><I>Fix orient/fcc file read failed</I>

			<DD>The fix orient/fcc command could not read the needed parameters from a
			specified file.

			<DT><I>Fix orient/fcc found self twice</I>

			<DD>The neighbor lists used by fix orient/fcc are messed up. If this
			error occurs, it is likely a bug, so send an email to the
			<A HREF = "http://lammps.sandia.gov/authors.html">developers</A>.

			<DT><I>Fix pour region ID does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Fix pour region cannot be dynamic</I>

			<DD>Only static regions can be used with fix pour.

			<DT><I>Fix pour region does not support a bounding box</I>

			<DD>Not all regions represent bounded volumes. You cannot use
			such a region with the fix pour command.

			<DT><I>Fix pour requires atom attributes radius, rmass</I>

			<DD>The atom style defined does not have these attributes.

			<DT><I>Fix press/berendsen period must be > 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Fix reax/bonds numbonds > nsbmax_most</I>

			<DD>The limit of the number of bonds expected by the ReaxFF force field
			was exceeded.

			<DT><I>Fix recenter group has no atoms</I>

			<DD>Self-explanatory.

			<DT><I>Fix rigid: Bad principal moments</I>

			<DD>The principal moments of inertia computed for a rigid body
			are not within the required tolerances.

			<DT><I>Fix shake cannot be used with minimization</I>

			<DD>Cannot use fix shake while doing an energy minimization since
			it turns off bonds that should contribute to the energy.

			<DT><I>Fix spring couple group ID does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Fix temp/berendsen period must be > 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Fix thermal/conductivity swap value must be positive</I>

			<DD>Self-explanatory.

			<DT><I>Fix tmd must come after integration fixes</I>

			<DD>Any fix tmd command must appear in the input script after all time
			integration fixes (nve, nvt, npt). See the fix tmd documentation for
			details.

			<DT><I>Fix ttm electron temperatures must be > 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Fix ttm electronic_density must be > 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Fix ttm electronic_specific_heat must be > 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Fix ttm electronic_thermal_conductivity must be >= 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Fix ttm gamma_p must be > 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Fix ttm gamma_s must be >= 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Fix ttm number of nodes must be > 0</I>

			<DD>Self-explanatory.

			<DT><I>Fix ttm v_0 must be >= 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Fix used in compute reduce not computed at compatible time</I>

			<DD>Fixes generate their values on specific timesteps. Compute sum is
			requesting a value on a non-allowed timestep.

			<DT><I>Fix viscosity swap value must be positive</I>

			<DD>Self-explanatory.

			<DT><I>Fix viscosity vtarget value must be positive</I>

			<DD>Self-explanatory.

			<DT><I>Fix wall cutoff <= 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Fix wall/colloid cannot be used with atom attribute diameter</I>

			<DD>Only finite-size particles defined by the shape command can be used.

			<DT><I>Fix wall/colloid requires atom attribute shape</I>

			<DD>Self-explanatory.

			<DT><I>Fix wall/colloid requires extended particles</I>

			<DD>Self-explanatory.

			<DT><I>Fix wall/colloid requires spherical particles</I>

			<DD>Self-explanatory.

			<DT><I>Fix wall/gran is incompatible with Pair style</I>

			<DD>Must use a granular pair style to define the parameters needed for
			this fix.

			<DT><I>Fix wall/gran requires atom attributes radius, omega, torque</I>

			<DD>The atom style defined does not have these attributes.

			<DT><I>Fix wall/region colloid cannot be used with atom attribute diameter</I>

			<DD>Only finite-size particles defined by the shape command can be used.

			<DT><I>Fix wall/region colloid requires atom attribute shape</I>

			<DD>Self-explanatory.

			<DT><I>Fix wall/region colloid requires extended particles</I>

			<DD>Self-explanatory.

			<DT><I>Fix wall/region colloid requires spherical particles</I>

			<DD>Self-explanatory.

			<DT><I>Fix wall/region cutoff <= 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Fix wall/region region ID does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Fix_modify pressure ID does not compute pressure</I>

			<DD>The compute ID assigned to the fix must compute pressure.

			<DT><I>Fix_modify temperature ID does not compute temperature</I>

			<DD>The compute ID assigned to the fix must compute temperature.

			<DT><I>Found no restart file matching pattern</I>

			<DD>When using a "*" in the restart file name, no matching file was found.

			<DT><I>Gravity must point in -y to use with fix pour in 2d</I>

			<DD>Gravity must be pointing "down" in a 2d box.

			<DT><I>Gravity must point in -z to use with fix pour in 3d</I>

			<DD>Gravity must be pointing "down" in a 3d box, i.e. theta = 180.0.

			<DT><I>Group ID does not exist</I>

			<DD>A group ID used in the group command does not exist.

			<DT><I>Group ID in variable formula does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Group command before simulation box is defined</I>

			<DD>The group command cannot be used before a read_data, read_restart, or
			create_box command.

			<DT><I>Group region ID does not exist</I>

			<DD>A region ID used in the group command does not exist.

			<DT><I>Illegal ... command</I>

			<DD>Self-explanatory. Check the input script syntax and compare to the
			documentation for the command. You can use -echo screen as a
			command-line option when running LAMMPS to see the offending line.

			<DT><I>Illegal Stillinger-Weber parameter</I>

			<DD>One or more of the coefficients defined in the potential file is
			invalid.

			<DT><I>Illegal Tersoff parameter</I>

			<DD>One or more of the coefficients defined in the potential file is
			invalid.

			<DT><I>Illegal chemical element names</I>

			<DD>The name is too long to be a chemical element.

			<DT><I>Illegal simulation box</I>

			<DD>The lower bound of the simulation box is greater than the upper bound.

			<DT><I>Improper atom missing in delete_bonds</I>

			<DD>The delete_bonds command cannot find one or more atoms in a particular
			improper on a particular processor. The pairwise cutoff is too short
			or the atoms are too far apart to make a valid improper.

			<DT><I>Improper atom missing in set command</I>

			<DD>The set command cannot find one or more atoms in a particular improper
			on a particular processor. The pairwise cutoff is too short or the
			atoms are too far apart to make a valid improper.

			<DT><I>Improper atoms %d %d %d %d missing on proc %d at step %d</I>

			<DD>One or more of 4 atoms needed to compute a particular improper are
			missing on this processor. Typically this is because the pairwise
			cutoff is set too short or the improper has blown apart and an atom is
			too far away.

			<DT><I>Improper coeff for hybrid has invalid style</I>

			<DD>Improper style hybrid uses another improper style as one of its
			coefficients. The improper style used in the improper_coeff command
			or read from a restart file is not recognized.

			<DT><I>Improper coeffs are not set</I>

			<DD>No improper coefficients have been assigned in the data file or via
			the improper_coeff command.

			<DT><I>Improper style hybrid cannot have hybrid as an argument</I>

			<DD>Self-explanatory.

			<DT><I>Improper style hybrid cannot have none as an argument</I>

			<DD>Self-explanatory.

			<DT><I>Improper style hybrid cannot use same improper style twice</I>

			<DD>Self-explanatory.

			<DT><I>Improper_coeff command before improper_style is defined</I>

			<DD>Coefficients cannot be set in the data file or via the improper_coeff
			command until an improper_style has been assigned.

			<DT><I>Improper_coeff command before simulation box is defined</I>

			<DD>The improper_coeff command cannot be used before a read_data,
			read_restart, or create_box command.

			<DT><I>Improper_coeff command when no impropers allowed</I>

			<DD>The chosen atom style does not allow for impropers to be defined.

			<DT><I>Improper_style command when no impropers allowed</I>

			<DD>The chosen atom style does not allow for impropers to be defined.

			<DT><I>Impropers assigned incorrectly</I>

			<DD>Impropers read in from the data file were not assigned correctly to
			atoms. This means there is something invalid about the topology
			definitions.

			<DT><I>Impropers defined but no improper types</I>

			<DD>The data file header lists improper but no improper types.

			<DT><I>Inconsistent iparam/jparam values in fix bond/create command</I>

			<DD>If itype and jtype are the same, then their maxbond and newtype
			settings must also be the same.

			<DT><I>Incorrect args for angle coefficients</I>

			<DD>Self-explanatory. Check the input script or data file.

			<DT><I>Incorrect args for bond coefficients</I>

			<DD>Self-explanatory. Check the input script or data file.

			<DT><I>Incorrect args for dihedral coefficients</I>

			<DD>Self-explanatory. Check the input script or data file.

			<DT><I>Incorrect args for improper coefficients</I>

			<DD>Self-explanatory. Check the input script or data file.

			<DT><I>Incorrect args for pair coefficients</I>

			<DD>Self-explanatory. Check the input script or data file.

			<DT><I>Incorrect args in pair_style command</I>

			<DD>Self-explanatory.

			<DT><I>Incorrect atom format in data file</I>

			<DD>Number of values per atom line in the data file is not consistent with
			the atom style.

			<DT><I>Incorrect boundaries with slab Ewald</I>

			<DD>Must have periodic x,y dimensions and non-periodic z dimension to use
			2d slab option with Ewald.

			<DT><I>Incorrect boundaries with slab PPPM</I>

			<DD>Must have periodic x,y dimensions and non-periodic z dimension to use
			2d slab option with PPPM.

			<DT><I>Incorrect element names in EAM potential file</I>

			<DD>The element names in the EAM file do not match those requested.

			<DT><I>Incorrect format in MEAM potential file</I>

			<DD>Incorrect number of words per line in the potential file.

			<DT><I>Incorrect format in Stillinger-Weber potential file</I>

			<DD>Incorrect number of words per line in the potential file.

			<DT><I>Incorrect format in TMD target file</I>

			<DD>Format of file read by fix tmd command is incorrect.

			<DT><I>Incorrect format in Tersoff potential file</I>

			<DD>Incorrect number of words per line in the potential file.

			<DT><I>Incorrect multiplicity arg for dihedral coefficients</I>

			<DD>Self-explanatory. Check the input script or data file.

			<DT><I>Incorrect sign arg for dihedral coefficients</I>

			<DD>Self-explanatory. Check the input script or data file.

			<DT><I>Incorrect velocity format in data file</I>

			<DD>Each atom style defines a format for the Velocity section
			of the data file. The read-in lines do not match.

			<DT><I>Incorrect weight arg for dihedral coefficients</I>

			<DD>Self-explanatory. Check the input script or data file.

			<DT><I>Index between input command brackets must be positive</I>

			<DD>Self-explantory.

			<DT><I>Indexed per-atom vector in variable formula without atom map</I>

			<DD>Accessing a value from an atom vector requires the ability to lookup
			an atom index, which is provided by an atom map. An atom map does not
			exist (by default) for non-molecular problems. Using the atom_modify
			map command will force an atom map to be created.

			<DT><I>Induced tilt by displace_box is too large</I>

			<DD>The final tilt value must be between -1/2 and 1/2 of the perpendicular
			box length.

			<DT><I>Initial temperatures not all set in fix ttm</I>

			<DD>Self-explantory.

			<DT><I>Input line too long after variable substitution</I>

			<DD>This is a hard (very large) limit defined in the input.cpp file.

			<DT><I>Input line too long: %s</I>

			<DD>This is a hard (very large) limit defined in the input.cpp file.

			<DT><I>Insertion region extends outside simulation box</I>

			<DD>Region specified with fix insert command extends outside the global
			simulation box.

			<DT><I>Insufficient Jacobi rotations for POEMS body</I>

			<DD>Eigensolve for rigid body was not sufficiently accurate.

			<DT><I>Insufficient Jacobi rotations for rigid body</I>

			<DD>Eigensolve for rigid body was not sufficiently accurate.

			<DT><I>Invalid REAX atom type</I>

			<DD>There is a mis-match between LAMMPS atom types and the elements
			listed in the ReaxFF force field file.

			<DT><I>Invalid angle style</I>

			<DD>The choice of angle style is unknown.

			<DT><I>Invalid angle table length</I>

			<DD>Length must be 2 or greater.

			<DT><I>Invalid angle type in Angles section of data file</I>

			<DD>Angle type must be positive integer and within range of specified angle
			types.

			<DT><I>Invalid angle type index for fix shake</I>

			<DD>Self-explanatory.

			<DT><I>Invalid atom ID in Angles section of data file</I>

			<DD>Atom IDs must be positive integers and within range of defined
			atoms.

			<DT><I>Invalid atom ID in Atoms section of data file</I>

			<DD>Atom IDs must be positive integers.

			<DT><I>Invalid atom ID in Bonds section of data file</I>

			<DD>Atom IDs must be positive integers and within range of defined
			atoms.

			<DT><I>Invalid atom ID in Dihedrals section of data file</I>

			<DD>Atom IDs must be positive integers and within range of defined
			atoms.

			<DT><I>Invalid atom ID in Impropers section of data file</I>

			<DD>Atom IDs must be positive integers and within range of defined
			atoms.

			<DT><I>Invalid atom ID in Velocities section of data file</I>

			<DD>Atom IDs must be positive integers and within range of defined
			atoms.

			<DT><I>Invalid atom mass for fix shake</I>

			<DD>Mass specified in fix shake command must be > 0.0.

			<DT><I>Invalid atom style</I>

			<DD>The choice of atom style is unknown.

			<DT><I>Invalid atom type in Atoms section of data file</I>

			<DD>Atom types must range from 1 to specified # of types.

			<DT><I>Invalid atom type in create_atoms command</I>

			<DD>The create_box command specified the range of valid atom types.
			An invalid type is being requested.

			<DT><I>Invalid atom type in fix bond/create command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid atom type in neighbor exclusion list</I>

			<DD>Atom types must range from 1 to Ntypes inclusive.

			<DT><I>Invalid atom type index for fix shake</I>

			<DD>Atom types must range from 1 to Ntypes inclusive.

			<DT><I>Invalid atom types in pair_write command</I>

			<DD>Atom types must range from 1 to Ntypes inclusive.

			<DT><I>Invalid atom vector in variable formula</I>

			<DD>The atom vector is not recognized.

			<DT><I>Invalid attribute in dump custom command</I>

			<DD>Self-explantory.

			<DT><I>Invalid attribute in dump local command</I>

			<DD>Self-explantory.

			<DT><I>Invalid attribute in dump modify command</I>

			<DD>Self-explantory.

			<DT><I>Invalid bond style</I>

			<DD>The choice of bond style is unknown.

			<DT><I>Invalid bond table length</I>

			<DD>Length must be 2 or greater.

			<DT><I>Invalid bond type in Bonds section of data file</I>

			<DD>Bond type must be positive integer and within range of specified bond
			types.

			<DT><I>Invalid bond type in fix bond/break command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid bond type in fix bond/create command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid bond type index for fix shake</I>

			<DD>Self-explanatory. Check the fix shake command in the input script.

			<DT><I>Invalid coeffs for this angle style</I>

			<DD>Cannot set class 2 coeffs in data file for this angle style.

			<DT><I>Invalid coeffs for this dihedral style</I>

			<DD>Cannot set class 2 coeffs in data file for this dihedral style.

			<DT><I>Invalid coeffs for this improper style</I>

			<DD>Cannot set class 2 coeffs in data file for this improper style.

			<DT><I>Invalid command-line argument</I>

			<DD>One or more command-line arguments is invalid. Check the syntax of
			the command you are using to launch LAMMPS.

			<DT><I>Invalid compute ID in variable formula</I>

			<DD>The compute is not recognized.

			<DT><I>Invalid compute style</I>

			<DD>Self-explanatory.

			<DT><I>Invalid cutoff in communicate command</I>

			<DD>Specified cutoff must be >= 0.0.

			<DT><I>Invalid cutoffs in pair_write command</I>

			<DD>Inner cutoff must be larger than 0.0 and less than outer cutoff.

			<DT><I>Invalid d1 or d2 value for pair colloid coeff</I>

			<DD>Neither d1 or d2 can be < 0.

			<DT><I>Invalid data file section: Angle Coeffs</I>

			<DD>Atom style does not allow angles.

			<DT><I>Invalid data file section: AngleAngle Coeffs</I>

			<DD>Atom style does not allow impropers.

			<DT><I>Invalid data file section: AngleAngleTorsion Coeffs</I>

			<DD>Atom style does not allow dihedrals.

			<DT><I>Invalid data file section: AngleTorsion Coeffs</I>

			<DD>Atom style does not allow dihedrals.

			<DT><I>Invalid data file section: Angles</I>

			<DD>Atom style does not allow angles.

			<DT><I>Invalid data file section: Bond Coeffs</I>

			<DD>Atom style does not allow bonds.

			<DT><I>Invalid data file section: BondAngle Coeffs</I>

			<DD>Atom style does not allow angles.

			<DT><I>Invalid data file section: BondBond Coeffs</I>

			<DD>Atom style does not allow angles.

			<DT><I>Invalid data file section: BondBond13 Coeffs</I>

			<DD>Atom style does not allow dihedrals.

			<DT><I>Invalid data file section: Bonds</I>

			<DD>Atom style does not allow bonds.

			<DT><I>Invalid data file section: Dihedral Coeffs</I>

			<DD>Atom style does not allow dihedrals.

			<DT><I>Invalid data file section: Dihedrals</I>

			<DD>Atom style does not allow dihedrals.

			<DT><I>Invalid data file section: EndBondTorsion Coeffs</I>

			<DD>Atom style does not allow dihedrals.

			<DT><I>Invalid data file section: Improper Coeffs</I>

			<DD>Atom style does not allow impropers.

			<DT><I>Invalid data file section: Impropers</I>

			<DD>Atom style does not allow impropers.

			<DT><I>Invalid data file section: MiddleBondTorsion Coeffs</I>

			<DD>Atom style does not allow dihedrals.

			<DT><I>Invalid density in Atoms section of data file</I>

			<DD>Density value cannot be <= 0.0.

			<DT><I>Invalid dihedral style</I>

			<DD>The choice of dihedral style is unknown.

			<DT><I>Invalid dihedral type in Dihedrals section of data file</I>

			<DD>Dihedral type must be positive integer and within range of specified
			dihedral types.

			<DT><I>Invalid dipole line in data file</I>

			<DD>Self-explanatory.

			<DT><I>Invalid dipole value</I>

			<DD>Self-explanatory.

			<DT><I>Invalid dump dcd filename</I>

			<DD>Filenames used with the dump dcd style cannot be binary or compressed
			or cause multiple files to be written.

			<DT><I>Invalid dump frequency</I>

			<DD>Dump frequency must be 1 or greater.

			<DT><I>Invalid dump style</I>

			<DD>The choice of dump style is unknown.

			<DT><I>Invalid dump xtc filename</I>

			<DD>Filenames used with the dump xtc style cannot be binary or compressed
			or cause multiple files to be written.

			<DT><I>Invalid dump xyz filename</I>

			<DD>Filenames used with the dump xyz style cannot be binary or cause files
			to be written by each processor.

			<DT><I>Invalid dump_modify threshhold operator</I>

			<DD>Operator keyword used for threshold specification in not recognized.

			<DT><I>Invalid fix ID in variable formula</I>

			<DD>The fix is not recognized.

			<DT><I>Invalid fix ave/time off column</I>

			<DD>Self-explantory.

			<DT><I>Invalid fix box/relax command for a 2d simulation</I>

			<DD>Fix box/relax styles involving the z dimension cannot be used in
			a 2d simulation.

			<DT><I>Invalid fix nph command for a 2d simulation</I>

			<DD>Cannot use style xy, yz, or xz for a 2d simulation.

			<DT><I>Invalid fix nph command pressure settings</I>

			<DD>Pressure settings for different components must be the same if
			the components are coupled.

			<DT><I>Invalid fix npt command for a 2d simulation</I>

			<DD>Cannot use style xy, yz, or xz for a 2d simulation.

			<DT><I>Invalid fix npt command pressure settings</I>

			<DD>Pressure settings for different components must be the same if
			the components are coupled.

			<DT><I>Invalid fix press/berendsen command for a 2d simulation</I>

			<DD>Can only use xyz or aniso styles in 2d.

			<DT><I>Invalid fix press/berendsen command pressure settings</I>

			<DD>Pressure settings for different components must be the same if
			the components are coupled.

			<DT><I>Invalid fix style</I>

			<DD>The choice of fix style is unknown.

			<DT><I>Invalid flag in force field section of restart file</I>

			<DD>Unrecognized entry in restart file.

			<DT><I>Invalid flag in header section of restart file</I>

			<DD>Unrecognized entry in restart file.

			<DT><I>Invalid flag in type arrays section of restart file</I>

			<DD>Unrecognized entry in restart file.

			<DT><I>Invalid frequency in temper command</I>

			<DD>Nevery must be > 0.

			<DT><I>Invalid group ID in neigh_modify command</I>

			<DD>A group ID used in the neigh_modify command does not exist.

			<DT><I>Invalid group function in variable formula</I>

			<DD>Group function is not recognized.

			<DT><I>Invalid group in communicate command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid improper style</I>

			<DD>The choice of improper style is unknown.

			<DT><I>Invalid improper type in Impropers section of data file</I>

			<DD>Improper type must be positive integer and within range of specified
			improper types.

			<DT><I>Invalid keyword in angle table parameters</I>

			<DD>Self-explanatory.

			<DT><I>Invalid keyword in bond table parameters</I>

			<DD>Self-explanatory.

			<DT><I>Invalid keyword in compute angle/local command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid keyword in compute bond/local command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid keyword in compute dihedral/local command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid keyword in compute improper/local command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid keyword in compute pair/local command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid keyword in compute property/atom command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid keyword in compute property/local command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid keyword in compute property/molecule command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid keyword in dump cfg command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid keyword in pair table parameters</I>

			<DD>Keyword used in list of table parameters is not recognized.

			<DT><I>Invalid keyword in thermo_style custom command</I>

			<DD>One or more specified keywords are not recognized.

			<DT><I>Invalid kspace style</I>

			<DD>The choice of kspace style is unknown.

			<DT><I>Invalid mass line in data file</I>

			<DD>Self-explanatory.

			<DT><I>Invalid mass value</I>

			<DD>Self-explanatory.

			<DT><I>Invalid math or group function in variable formula</I>

			<DD>The math or group function is not recognized.

			<DT><I>Invalid natoms for dump dcd</I>

			<DD>Natoms is initially 0 which is not valid for the dump dcd style.
			Natoms must be constant for the duration of the simulation.

			<DT><I>Invalid natoms for dump xtc</I>

			<DD>Natoms is initially 0 which is not valid for the dump xtc style.

			<DT><I>Invalid natoms for dump xyz</I>

			<DD>Natoms is initially 0 which is not valid for the dump xyz style.

			<DT><I>Invalid option in lattice command for non-custom style</I>

			<DD>Certain lattice keywords are not supported unless the
			lattice style is "custom".

			<DT><I>Invalid order of forces within respa levels</I>

			<DD>For respa, ordering of force computations within respa levels must
			obey certain rules. E.g. bonds cannot be compute less frequently than
			angles, pairwise forces cannot be computed less frequently than
			kspace, etc.

			<DT><I>Invalid pair style</I>

			<DD>The choice of pair style is unknown.

			<DT><I>Invalid pair table cutoff</I>

			<DD>Cutoffs in pair_coeff command are not valid with read-in pair table.

			<DT><I>Invalid pair table length</I>

			<DD>Length of read-in pair table is invalid

			<DT><I>Invalid radius in Atoms section of data file</I>

			<DD>Radius must be >= 0.0.

			<DT><I>Invalid random number seed in fix ttm command</I>

			<DD>Random number seed must be > 0.

			<DT><I>Invalid random number seed in set command</I>

			<DD>Random number seed must be > 0.

			<DT><I>Invalid region in group function in variable formula</I>

			<DD>Self-explanatory.

			<DT><I>Invalid region style</I>

			<DD>The choice of region style is unknown.

			<DT><I>Invalid replace values in compute reduce</I>

			<DD>Self-explanatory.

			<DT><I>Invalid seed for Marsaglia random # generator</I>

			<DD>The initial seed for this random number generator must be a positive
			integer less than or equal to 900 million.

			<DT><I>Invalid seed for Park random # generator</I>

			<DD>The initial seed for this random number generator must be a positive
			integer.

			<DT><I>Invalid shape line in data file</I>

			<DD>Self-explanatory.

			<DT><I>Invalid shape line in data file</I>

			<DD>Self-explanatory.

			<DT><I>Invalid shape value</I>

			<DD>Self-explanatory.

			<DT><I>Invalid shear direction for fix wall/gran</I>

			<DD>Self-explanatory.

			<DT><I>Invalid style in pair_write command</I>

			<DD>Self-explanatory. Check the input script.

			<DT><I>Invalid syntax in variable formula</I>

			<DD>Self-explanatory.

			<DT><I>Invalid t_event in prd command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid thermo keyword in variable formula</I>

			<DD>The keyword is not recognized.

			<DT><I>Invalid type for dipole set</I>

			<DD>Dipole command must set a type from 1-N where N is the number of atom
			types.

			<DT><I>Invalid type for mass set</I>

			<DD>Mass command must set a type from 1-N where N is the number of atom
			types.

			<DT><I>Invalid type for shape set</I>

			<DD>Atom type is out of bounds.

			<DT><I>Invalid value in set command</I>

			<DD>The value specified for the setting is invalid, likely because it is
			too small or too large.

			<DT><I>Invalid variable evaluation in variable formula</I>

			<DD>A variable used in a formula could not be evaluated.

			<DT><I>Invalid variable in next command</I>

			<DD>Self-explanatory.

			<DT><I>Invalid variable name in variable formula</I>

			<DD>Variable name is not recognized.

			<DT><I>Invalid variable name</I>

			<DD>Variable name used in an input script line is invalid.

			<DT><I>Invalid variable style with next command</I>

			<DD>Variable styles <I>equal</I> and <I>world</I> cannot be used in a next
			command.

			<DT><I>Invalid wiggle direction for fix wall/gran</I>

			<DD>Self-explanatory.

			<DT><I>Invoked angle equil angle on angle style none</I>

			<DD>Self-explanatory.

			<DT><I>Invoked angle single on angle style none</I>

			<DD>Self-explanatory.

			<DT><I>Invoked bond equil distance on bond style none</I>

			<DD>Self-explanatory.

			<DT><I>Invoked bond single on bond style none</I>

			<DD>Self-explanatory.

			<DT><I>Invoked pair single on pair style none</I>

			<DD>A command (e.g. a dump) attempted to invoke the single() function on a
			pair style none, which is illegal. You are probably attempting to
			compute per-atom quantities with an undefined pair style.

			<DT><I>KSpace style has not yet been set</I>

			<DD>Cannot use kspace_modify command until a kspace style is set.

			<DT><I>KSpace style is incompatible with Pair style</I>

			<DD>Setting a kspace style requires that a pair style with a long-range
			Coulombic component be selected.

			<DT><I>Keyword %s in MEAM parameter file not recognized</I>

			<DD>Self-explanatory.

			<DT><I>Kspace style requires atom attribute q</I>

			<DD>The atom style defined does not have these attributes.

			<DT><I>Label wasn't found in input script</I>

			<DD>Self-explanatory.

			<DT><I>Lattice orient vectors are not orthogonal</I>

			<DD>The three specified lattice orientation vectors must be mutually
			orthogonal.

			<DT><I>Lattice orient vectors are not right-handed</I>

			<DD>The three specified lattice orientation vectors must create a
			right-handed coordinate system such that a1 cross a2 = a3.

			<DT><I>Lattice primitive vectors are collinear</I>

			<DD>The specified lattice primitive vectors do not for a unit cell with
			non-zero volume.

			<DT><I>Lattice settings are not compatible with 2d simulation</I>

			<DD>One or more of the specified lattice vectors has a non-zero z
			component.

			<DT><I>Lattice spacings are invalid</I>

			<DD>Each x,y,z spacing must be > 0.

			<DT><I>Lattice style incompatible with simulation dimension</I>

			<DD>2d simulation can use sq, sq2, or hex lattice. 3d simulation can use
			sc, bcc, or fcc lattice.

			<DT><I>Log of zero/negative in variable formula</I>

			<DD>Self-explanatory.

			<DT><I>Lost atoms via displace_atoms: original %.15g current %.15g</I>

			<DD>The displace_atoms command lost one or more atoms.

			<DT><I>Lost atoms via displace_box: original %.15g current %.15g</I>

			<DD>The displace_box command lost one or more atoms.

			<DT><I>Lost atoms: original %.15g current %.15g</I>

			<DD>A thermodynamic computation has detected lost atoms.

			<DT><I>MEAM library error %d</I>

			<DD>A call to the MEAM Fortran library returned an error.

			<DT><I>Mass command before simulation box is defined</I>

			<DD>The mass command cannot be used before a read_data, read_restart, or
			create_box command.

			<DT><I>Min_style command before simulation box is defined</I>

			<DD>The min_style command cannot be used before a read_data, read_restart,
			or create_box command.

			<DT><I>Minimization could not find thermo_pe compute</I>

			<DD>This compute is created by the thermo command. It must have been
			explicitly deleted by a uncompute command.

			<DT><I>Minimize command before simulation box is defined</I>

			<DD>The minimize command cannot be used before a read_data, read_restart,
			or create_box command.

			<DT><I>Mismatched brackets in input command</I>

			<DD>Self-explanatory.

			<DT><I>Mismatched compute in variable formula</I>

			<DD>A compute is referenced incorrectly or a compute that produces per-atom
			values is used in an equal-style variable formula.

			<DT><I>Mismatched fix in variable formula</I>

			<DD>A fix is referenced incorrectly or a fix that produces per-atom
			values is used in an equal-style variable formula.

			<DT><I>Mismatched variable in variable formula</I>

			<DD>A variable is referenced incorrectly or an atom-style variable that
			produces per-atom values is used in an equal-style variable
			formula.

			<DT><I>Molecule count changed in compute com/molecule</I>

			<DD>Number of molecules must remain constant over time.

			<DT><I>Molecule count changed in compute gyration/molecule</I>

			<DD>Number of molecules must remain constant over time.

			<DT><I>Molecule count changed in compute msd/molecule</I>

			<DD>Number of molecules must remain constant over time.

			<DT><I>Molecule count changed in compute property/molecule</I>

			<DD>Number of molecules must remain constant over time.

			<DT><I>More than one fix deform</I>

			<DD>Only one fix deform can be defined at a time.

			<DT><I>More than one fix freeze</I>

			<DD>Only one of these fixes can be defined, since the granular pair
			potentials access it.

			<DT><I>More than one fix shake</I>

			<DD>Only one fix shake can be defined.

			<DT><I>Must define angle_style before Angle Coeffs</I>

			<DD>Must use an angle_style command before reading a data file that
			defines Angle Coeffs.

			<DT><I>Must define angle_style before BondAngle Coeffs</I>

			<DD>Must use an angle_style command before reading a data file that
			defines Angle Coeffs.

			<DT><I>Must define angle_style before BondBond Coeffs</I>

			<DD>Must use an angle_style command before reading a data file that
			defines Angle Coeffs.

			<DT><I>Must define bond_style before Bond Coeffs</I>

			<DD>Must use a bond_style command before reading a data file that
			defines Bond Coeffs.

			<DT><I>Must define dihedral_style before AngleAngleTorsion Coeffs</I>

			<DD>Must use a dihedral_style command before reading a data file that
			defines AngleAngleTorsion Coeffs.

			<DT><I>Must define dihedral_style before AngleTorsion Coeffs</I>

			<DD>Must use a dihedral_style command before reading a data file that
			defines AngleTorsion Coeffs.

			<DT><I>Must define dihedral_style before BondBond13 Coeffs</I>

			<DD>Must use a dihedral_style command before reading a data file that
			defines BondBond13 Coeffs.

			<DT><I>Must define dihedral_style before Dihedral Coeffs</I>

			<DD>Must use a dihedral_style command before reading a data file that
			defines Dihedral Coeffs.

			<DT><I>Must define dihedral_style before EndBondTorsion Coeffs</I>

			<DD>Must use a dihedral_style command before reading a data file that
			defines EndBondTorsion Coeffs.

			<DT><I>Must define dihedral_style before MiddleBondTorsion Coeffs</I>

			<DD>Must use a dihedral_style command before reading a data file that
			defines MiddleBondTorsion Coeffs.

			<DT><I>Must define improper_style before AngleAngle Coeffs</I>

			<DD>Must use an improper_style command before reading a data file that
			defines AngleAngle Coeffs.

			<DT><I>Must define improper_style before Improper Coeffs</I>

			<DD>Must use an improper_style command before reading a data file that
			defines Improper Coeffs.

			<DT><I>Must define pair_style before Pair Coeffs</I>

			<DD>Must use a pair_style command before reading a data file that defines
			Pair Coeffs.

			<DT><I>Must have more than one processor partition to temper</I>

			<DD>Cannot use the temper command with only one processor partition. Use
			the -partition command-line option.

			<DT><I>Must read Atoms before Angles</I>

			<DD>The Atoms section of a data file must come before an Angles section.

			<DT><I>Must read Atoms before Bonds</I>

			<DD>The Atoms section of a data file must come before a Bonds section.

			<DT><I>Must read Atoms before Dihedrals</I>

			<DD>The Atoms section of a data file must come before a Dihedrals section.

			<DT><I>Must read Atoms before Impropers</I>

			<DD>The Atoms section of a data file must come before an Impropers
			section.

			<DT><I>Must read Atoms before Velocities</I>

			<DD>The Atoms section of a data file must come before a Velocities
			section.

			<DT><I>Must set both respa inner and outer</I>

			<DD>Cannot use just the inner or outer option with respa without using the
			other.

			<DT><I>Must specify a region in fix deposit</I>

			<DD>The region keyword must be specified with this fix.

			<DT><I>Must specify a region in fix pour</I>

			<DD>The region keyword must be specified with this fix.

			<DT><I>Must use -in switch with multiple partitions</I>

			<DD>A multi-partition simulation cannot read the input script from stdin.
			The -in command-line option must be used to specify a file.

			<DT><I>Must use a block or cylinder region with fix pour</I>

			<DD>Self-explanatory.

			<DT><I>Must use a block region with fix pour for 2d simulations</I>

			<DD>Self-explanatory.

			<DT><I>Must use a bond style with TIP4P potential</I>

			<DD>TIP4P potentials assume bond lengths in water are constrained
			by a fix shake command.

			<DT><I>Must use a molecular atom style with fix poems molecule</I>

			<DD>Self-explanatory.

			<DT><I>Must use a molecular atom style with fix rigid molecule</I>

			<DD>Self-explanatory.

			<DT><I>Must use a z-axis cylinder with fix pour</I>

			<DD>The axis of the cylinder region used with the fix insert command must
			be oriented along the z dimension.

			<DT><I>Must use an angle style with TIP4P potential</I>

			<DD>TIP4P potentials assume angles in water are constrained by a fix shake
			command.

			<DT><I>Must use atom style with molecule IDs with fix bond/swap</I>

			<DD>Self-explanatory.

			<DT><I>Must use charged atom style with fix efield</I>

			<DD>The atom style being used does not allow atoms to have assigned
			charges. Hence it will not work with this fix which generates a force
			due to an E-field acting on charge.

			<DT><I>Must use fix gravity with fix pour</I>

			<DD>Insertion of granular particles must be done under the influence of
			gravity.

			<DT><I>Must use molecular atom style with neigh_modify exclude molecule</I>

			<DD>The atom style must define a molecule ID to use the exclude
			option.

			<DT><I>Needed topology not in data file</I>

			<DD>The header of the data file indicated that bonds or angles or
			dihedrals or impropers would be included, but they were not present.

			<DT><I>Neigh_modify include group != atom_modify first group</I>

			<DD>Self-explanatory.

			<DT><I>Neighbor delay must be 0 or multiple of every setting</I>

			<DD>The delay and every parameters set via the neigh_modify command are
			inconsistent. If the delay setting is non-zero, then it must be a
			multiple of the every setting.

			<DT><I>Neighbor list overflow, boost neigh_modify one or page</I>

			<DD>There are too many neighbors of a single atom. Use the neigh_modify
			command to increase the neighbor page size and the max number of
			neighbors allowed for one atom.

			<DT><I>Neighbor multi not yet enabled for granular</I>

			<DD>Self-explanatory.

			<DT><I>Neighbor multi not yet enabled for rRESPA</I>

			<DD>Self-explanatory.

			<DT><I>Neighbor page size must be >= 10x the one atom setting</I>

			<DD>This is required to prevent wasting too much memory.

			<DT><I>New bond exceeded bonds per atom in fix bond/create</I>

			<DD>See the read_data command for info on setting the "extra bond per
			atom" header value to allow for additional bonds to be formed.

			<DT><I>New bond exceeded special list size in fix bond/create</I>

			<DD>See the special_bonds extra command for info on how to leave space in
			the special bonds list to allow for additional bonds to be formed.

			<DT><I>Newton bond change after simulation box is defined</I>

			<DD>The newton command cannot be used to change the newton bond value
			after a read_data, read_restart, or create_box command.

			<DT><I>No angle style is defined for compute angle/local</I>

			<DD>Self-explanatory.

			<DT><I>No angles allowed with this atom style</I>

			<DD>Self-explanatory. Check data file.

			<DT><I>No atoms in data file</I>

			<DD>The header of the data file indicated that atoms would be included,
			but they were not present.

			<DT><I>No basis atoms in lattice</I>

			<DD>Basis atoms must be defined for lattice style user.

			<DT><I>No bond style is defined for compute bond/local</I>

			<DD>Self-explanatory.

			<DT><I>No bonds allowed with this atom style</I>

			<DD>Self-explanatory. Check data file.

			<DT><I>No dihedral style is defined for compute dihedral/local</I>

			<DD>Self-explanatory.

			<DT><I>No dihedrals allowed with this atom style</I>

			<DD>Self-explanatory. Check data file.

			<DT><I>No dump custom arguments specified</I>

			<DD>The dump custom command requires that atom quantities be specified to
			output to dump file.

			<DT><I>No dump local arguments specified</I>

			<DD>Self-explanatory.

			<DT><I>No improper style is defined for compute improper/local</I>

			<DD>Self-explanatory.

			<DT><I>No impropers allowed with this atom style</I>

			<DD>Self-explanatory. Check data file.

			<DT><I>No matching element in EAM potential file</I>

			<DD>The EAM potential file does not contain elements that match the
			requested elements.

			<DT><I>No pair style is defined for compute pair/local</I>

			<DD>Self-explanatory.

			<DT><I>No pair style is defined for compute property/local</I>

			<DD>Self-explanatory.

			<DT><I>No rigid bodies defined</I>

			<DD>The fix specification did not end up defining any rigid bodies.

			<DT><I>Non digit character between brackets in input command</I>

			<DD>Self-explanatory.

			<DT><I>Non integer # of swaps in temper command</I>

			<DD>Swap frequency in temper command must evenly divide the total # of
			timesteps.

			<DT><I>One or more atoms belong to multiple rigid bodies</I>

			<DD>Two or more rigid bodies defined by the fix rigid command cannot
			contain the same atom.

			<DT><I>One or zero atoms in rigid body</I>

			<DD>Any rigid body defined by the fix rigid command must contain 2 or more
			atoms.

			<DT><I>Out of range atoms - cannot compute PPPM</I>

			<DD>One or more atoms are attempting to map their charge to a PPPM grid
			point that is not owned by a processor. This is likely for one of two
			reasons, both of them bad. First, it may mean that an atom near the
			boundary of a processor's sub-domain has moved more than 1/2 the
			<A HREF = "neighbor.html">neighbor skin distance</A> without neighbor lists being
			rebuilt and atoms being migrated to new processors. This also means
			you may be missing pairwise interactions that need to be computed.
			The solution is to change the re-neighboring criteria via the
			<A HREF = "neigh_modify">neigh_modify</A> command. The safest settings are "delay 0
			every 1 check yes". Second, it may mean that an atom has moved far
			outside a processor's sub-domain or even the entire simulation box.
			This indicates bad physics, e.g. due to highly overlapping atoms, too
			large a timestep, etc.

			<DT><I>POEMS fix must come before NPT/NPH fix</I>

			<DD>NPT/NPH fix must be defined in input script after all poems fixes,
			else the fix contribution to the pressure virial is incorrect.

			<DT><I>PPPM grid is too large</I>

			<DD>The global PPPM grid is larger than OFFSET in one or more dimensions.
			OFFSET is currently set to 4096. You likely need to decrease the
			requested precision.

			<DT><I>PPPM order cannot be greater than %d</I>

			<DD>Self-explanatory.

			<DT><I>PPPM order has been reduced to 0</I>

			<DD>LAMMPS has attempted to reduce the PPPM order to enable the simulation
			to run, but can reduce the order no further. Try increasing the
			accuracy of PPPM by reducing the tolerance size, thus inducing a
			larger PPPM grid.

			<DT><I>PRD command before simulation box is defined</I>

			<DD>The prd command cannot be used before a read_data,
			read_restart, or create_box command.

			<DT><I>PRD nsteps must be multiple of t_event</I>

			<DD>Self-explanatory.

			<DT><I>PRD t_corr must be multiple of t_event</I>

			<DD>Self-explanatory.

			<DT><I>Pair coeff for hybrid has invalid style</I>

			<DD>Style in pair coeff must have been listed in pair_style command.

			<DT><I>Pair cutoff < Respa interior cutoff</I>

			<DD>One or more pairwise cutoffs are too short to use with the specified
			rRESPA cutoffs.

			<DT><I>Pair dipole/cut requires atom attributes q, mu, torque, dipole</I>

			<DD>An atom style that specifies these quantities is needed.

			<DT><I>Pair distance < table inner cutoff</I>

			<DD>Two atoms are closer together than the pairwise table allows.

			<DT><I>Pair distance > table outer cutoff</I>

			<DD>Two atoms are further apart than the pairwise table allows.

			<DT><I>Pair dpd requires ghost atoms store velocity</I>

			<DD>Use the communicate vel yes command to enable this.

			<DT><I>Pair gayberne cannot be used with atom attribute diameter</I>

			<DD>Finite-size particles must be defined with the shape command.

			<DT><I>Pair gayberne epsilon a,b,c coeffs are not all set</I>

			<DD>Each atom type involved in pair_style gayberne must
			have these 3 coefficients set at least once.

			<DT><I>Pair gayberne requires atom attributes quat, torque, shape</I>

			<DD>An atom style that defines these attributes must be used.

			<DT><I>Pair granular requires atom attributes radius, omega, torque</I>

			<DD>The atom style defined does not have these attributes.

			<DT><I>Pair granular requires ghost atoms store velocity</I>

			<DD>Use the communicate vel yes command to enable this.

			<DT><I>Pair granular with shear history requires newton pair off</I>

			<DD>This is a current restriction of the implementation of pair
			granular styles with history.

			<DT><I>Pair hybrid sub-style is not used</I>

			<DD>No pair_coeff command used a sub-style specified in the pair_style
			command.

			<DT><I>Pair inner cutoff < Respa interior cutoff</I>

			<DD>One or more pairwise cutoffs are too short to use with the specified
			rRESPA cutoffs.

			<DT><I>Pair inner cutoff >= Pair outer cutoff</I>

			<DD>The specified cutoffs for the pair style are inconsistent.

			<DT><I>Pair lubricate cannot be used with atom attributes diameter or rmass</I>

			<DD>These attributes override the shape and mass settings, so cannot be
			used.

			<DT><I>Pair lubricate requires atom attribute omega or angmom</I>

			<DD>An atom style that defines these attributes must be used.

			<DT><I>Pair lubricate requires atom attributes torque and shape</I>

			<DD>An atom style that defines these attributes must be used.

			<DT><I>Pair lubricate requires extended particles</I>

			<DD>This pair style can only be used for particles with a shape
			setting.

			<DT><I>Pair lubricate requires ghost atoms store velocity</I>

			<DD>Use the communicate vel yes command to enable this.

			<DT><I>Pair lubricate requires spherical, mono-disperse particles</I>

			<DD>This is a current restriction of this pair style.

			<DT><I>Pair peri lattice is not identical in x, y, and z</I>

			<DD>The lattice defined by the lattice command must be cubic.

			<DT><I>Pair peri requires a lattice be defined</I>

			<DD>Use the lattice command for this purpose.

			<DT><I>Pair peri requires an atom map, see atom_modify</I>

			<DD>Even for atomic systems, an atom map is required to find Peridynamic
			bonds. Use the atom_modify command to define one.

			<DT><I>Pair resquared cannot be used with atom attribute diameter</I>

			<DD>This attribute overrides the shape settings, so cannot be used.

			<DT><I>Pair resquared epsilon a,b,c coeffs are not all set</I>

			<DD>Self-explanatory.

			<DT><I>Pair resquared epsilon and sigma coeffs are not all set</I>

			<DD>Self-explanatory.

			<DT><I>Pair resquared requires atom attributes quat, torque, shape</I>

			<DD>An atom style that defines these attributes must be used.

			<DT><I>Pair style AIREBO requires atom IDs</I>

			<DD>This is a requirement to use the AIREBO potential.

			<DT><I>Pair style AIREBO requires newton pair on</I>

			<DD>Self-explanatory.

			<DT><I>Pair style MEAM requires newton pair on</I>

			<DD>See the newton command. This is a restriction to use the MEAM
			potential.

			<DT><I>Pair style Stillinger-Weber requires atom IDs</I>

			<DD>This is a requirement to use the SW potential.

			<DT><I>Pair style Stillinger-Weber requires newton pair on</I>

			<DD>See the newton command. This is a restriction to use the SW
			potential.

			<DT><I>Pair style Tersoff requires atom IDs</I>

			<DD>This is a requirement to use the Tersoff potential.

			<DT><I>Pair style Tersoff requires newton pair on</I>

			<DD>See the newton command. This is a restriction to use the Tersoff
			potential.

			<DT><I>Pair style born/coul/long requires atom attribute q</I>

			<DD>An atom style that defines this attribute must be used.

			<DT><I>Pair style buck/coul/cut requires atom attribute q</I>

			<DD>The atom style defined does not have this attribute.

			<DT><I>Pair style buck/coul/long requires atom attribute q</I>

			<DD>The atom style defined does not have these attributes.

			<DT><I>Pair style coul/cut requires atom attribute q</I>

			<DD>The atom style defined does not have these attributes.

			<DT><I>Pair style does not support bond_style quartic</I>

			<DD>The pair style does not have a single() function, so it can
			not be invoked by bond_style quartic.

			<DT><I>Pair style does not support compute group/group</I>

			<DD>The pair_style does not have a single() function, so it cannot be
			invokded by the compute group/group command.

			<DT><I>Pair style does not support compute heat/flux</I>

			<DD>The pair style does not have a single() function, so it can
			not be invoked by compute heat/flux.

			<DT><I>Pair style does not support compute pair/local</I>

			<DD>The pair style does not have a single() function, so it can
			not be invoked by fix bond/swap.

			<DT><I>Pair style does not support compute property/local</I>

			<DD>The pair style does not have a single() function, so it can
			not be invoked by fix bond/swap.

			<DT><I>Pair style does not support fix bond/swap</I>

			<DD>The pair style does not have a single() function, so it can
			not be invoked by fix bond/swap.

			<DT><I>Pair style does not support pair_write</I>

			<DD>The pair style does not have a single() function, so it can
			not be invoked by pair write.

			<DT><I>Pair style does not support rRESPA inner/middle/outer</I>

			<DD>You are attempting to use rRESPA options with a pair style that
			does not support them.

			<DT><I>Pair style granular with history requires atoms have IDs</I>

			<DD>Atoms in the simulation do not have IDs, so history effects
			cannot be tracked by the granular pair potential.

			<DT><I>Pair style hybrid cannot have hybrid as an argument</I>

			<DD>Self-explanatory.

			<DT><I>Pair style hybrid cannot have none as an argument</I>

			<DD>Self-explanatory.

			<DT><I>Pair style hybrid cannot use same pair style twice</I>

			<DD>The sub-style arguments of pair_style hybrid cannot be duplicated.
			Check the input script.

			<DT><I>Pair style is incompatible with KSpace style</I>

			<DD>If a pair style with a long-range Coulombic component is selected,
			then a kspace style must also be used.

			<DT><I>Pair style lj/charmm/coul/charmm requires atom attribute q</I>

			<DD>The atom style defined does not have these attributes.

			<DT><I>Pair style lj/charmm/coul/long requires atom attribute q</I>

			<DD>The atom style defined does not have these attributes.

			<DT><I>Pair style lj/class2/coul/cut requires atom attribute q</I>

			<DD>The atom style defined does not have this attribute.

			<DT><I>Pair style lj/class2/coul/long requires atom attribute q</I>

			<DD>The atom style defined does not have this attribute.

			<DT><I>Pair style lj/cut/coul/cut requires atom attribute q</I>

			<DD>The atom style defined does not have this attribute.

			<DT><I>Pair style lj/cut/coul/long requires atom attribute q</I>

			<DD>The atom style defined does not have this attribute.

			<DT><I>Pair style lj/cut/coul/long/tip4p requires atom IDs</I>

			<DD>There are no atom IDs defined in the system and the TIP4P potential
			requires them to find O,H atoms with a water molecule.

			<DT><I>Pair style lj/cut/coul/long/tip4p requires atom attribute q</I>

			<DD>The atom style defined does not have these attributes.

			<DT><I>Pair style lj/cut/coul/long/tip4p requires newton pair on</I>

			<DD>This is because the computation of constraint forces within a water
			molecule adds forces to atoms owned by other processors.

			<DT><I>Pair style lj/gromacs/coul/gromacs requires atom attribute q</I>

			<DD>An atom_style with this attribute is needed.

			<DT><I>Pair style peri_pmb requires atom style peri</I>

			<DD>This is because atom style peri stores quantities needed by
			the peridynamic potential.

			<DT><I>Pair style reax requires atom IDs</I>

			<DD>This is a requirement to use the ReaxFF potential.

			<DT><I>Pair style reax requires newton pair on</I>

			<DD>This is a requirement to use the ReaxFF potential.

			<DT><I>Pair table cutoffs must all be equal to use with KSpace</I>

			<DD>When using pair style table with a long-range KSpace solver, the
			cutoffs for all atom type pairs must all be the same, since the
			long-range solver starts at that cutoff.

			<DT><I>Pair table parameters did not set N</I>

			<DD>List of pair table parameters must include N setting.

			<DT><I>Pair tersoff/zbl requires metal or real units</I>

			<DD>This is a current restriction of this pair potential.

			<DT><I>Pair yukawa/colloid cannot be used with atom attribute diameter</I>

			<DD>Only finite-size particles defined by the shape command can be used.

			<DT><I>Pair yukawa/colloid requires atom attribute shape</I>

			<DD>Self-explanatory.

			<DT><I>Pair yukawa/colloid requires spherical particles</I>

			<DD>Self-explanatory.

			<DT><I>Pair_coeff command before pair_style is defined</I>

			<DD>Self-explanatory.

			<DT><I>Pair_coeff command before simulation box is defined</I>

			<DD>The pair_coeff command cannot be used before a read_data,
			read_restart, or create_box command.

			<DT><I>Pair_modify command before pair_style is defined</I>

			<DD>Self-explanatory.

			<DT><I>Pair_write command before pair_style is defined</I>

			<DD>Self-explanatory.

			<DT><I>Particle on or inside fix wall surface</I>

			<DD>Particles must be "exterior" to the wall in order for energy/force to
			be calculated.

			<DT><I>Particle on or inside fix wall/region surface</I>

			<DD>Particles must be "exterior" to the region surface in order for
			energy/force to be calculated.

			<DT><I>Per-atom compute in equal-style variable formula</I>

			<DD>Equal-style variables cannot use per-atom quantities.

			<DT><I>Per-atom energy was not tallied on needed timestep</I>

			<DD>You are using a thermo keyword that requires potentials to
			have tallied energy, but they didn't on this timestep. See the
			variable doc page for ideas on how to make this work.

			<DT><I>Per-atom fix in equal-style variable formula</I>

			<DD>Equal-style variables cannot use per-atom quantities.

			<DT><I>Per-atom virial not available with GPU Gay-Berne</I>

			<DD>Self-explanatory.

			<DT><I>Per-atom virial not available with GPU lj/cut</I>

			<DD>Self-explanatory.

			<DT><I>Per-atom virial was not tallied on needed timestep</I>

			<DD>You are using a thermo keyword that requires potentials to have
			tallied the virial, but they didn't on this timestep. See the
			variable doc page for ideas on how to make this work.

			<DT><I>Potential file has duplicate entry</I>

			<DD>The potential file for a SW or Tersoff potential has more than
			one entry for the same 3 ordered elements.

			<DT><I>Potential file is missing an entry</I>

			<DD>The potential file for a SW or Tersoff potential does not have a
			needed entry.

			<DT><I>Power by 0 in variable formula</I>

			<DD>Self-explanatory.

			<DT><I>Pressure ID for fix box/relax does not exist</I>

			<DD>The compute ID needed to compute pressure for the fix does not
			exist.

			<DT><I>Pressure ID for fix modify does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Pressure ID for fix nph does not exist</I>

			<DD>The compute ID needed to compute pressure for the fix does not
			exist.

			<DT><I>Pressure ID for fix npt does not exist</I>

			<DD>The compute ID needed to compute pressure for the fix does not
			exist.

			<DT><I>Pressure ID for fix press/berendsen does not exist</I>

			<DD>The compute ID needed to compute pressure for the fix does not
			exist.

			<DT><I>Pressure ID for thermo does not exist</I>

			<DD>The compute ID needed to compute pressure for thermodynamics does not
			exist.

			<DT><I>Proc grid in z != 1 for 2d simulation</I>

			<DD>There cannot be more than 1 processor in the z dimension of a 2d
			simulation.

			<DT><I>Processor partitions are inconsistent</I>

			<DD>The total number of processors in all partitions must match the number
			of processors LAMMPS is running on.

			<DT><I>Processors command after simulation box is defined</I>

			<DD>The processors command cannot be used after a read_data, read_restart,
			or create_box command.

			<DT><I>Quaternion creation numeric error</I>

			<DD>A numeric error occurred in the creation of a rigid body by the fix
			rigid command.

			<DT><I>R0 < 0 for fix spring command</I>

			<DD>Equilibrium spring length is invalid.

			<DT><I>Region cannot have 0 length rotation vector</I>

			<DD>Self-explanatory.

			<DT><I>Region intersect region ID does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Region union or intersect cannot be dynamic</I>

			<DD>The sub-regions can be dynamic, but not the combined region.

			<DT><I>Region union region ID does not exist</I>

			<DD>One or more of the region IDs specified by the region union command
			does not exist.

			<DT><I>Replacing a fix, but new style != old style</I>

			<DD>A fix ID can be used a 2nd time, but only if the style matches the
			previous fix. In this case it is assumed you with to reset a fix's
			parameters. This error may mean you are mistakenly re-using a fix ID
			when you do not intend to.

			<DT><I>Replicate command before simulation box is defined</I>

			<DD>The replicate command cannot be used before a read_data, read_restart,
			or create_box command.

			<DT><I>Replicate did not assign all atoms correctly</I>

			<DD>Atoms replicated by the replicate command were not assigned correctly
			to processors. This is likely due to some atom coordinates being
			outside a non-periodic simulation box.

			<DT><I>Respa inner cutoffs are invalid</I>

			<DD>The first cutoff must be <= the second cutoff.

			<DT><I>Respa levels must be >= 1</I>

			<DD>Self-explanatory.

			<DT><I>Respa middle cutoffs are invalid</I>

			<DD>The first cutoff must be <= the second cutoff.

			<DT><I>Reuse of compute ID</I>

			<DD>A compute ID cannot be used twice.

			<DT><I>Reuse of dump ID</I>

			<DD>A dump ID cannot be used twice.

			<DT><I>Reuse of region ID</I>

			<DD>A region ID cannot be used twice.

			<DT><I>Rigid body has degenerate moment of inertia</I>

			<DD>Fix poems will only work with bodies (collections of atoms) that have
			non-zero principal moments of inertia. This means they must be 3 or
			more non-collinear atoms, even with joint atoms removed.

			<DT><I>Rigid fix must come before NPT/NPH fix</I>

			<DD>NPT/NPH fix must be defined in input script after all rigid fixes,
			else the rigid fix contribution to the pressure virial is
			incorrect.

			<DT><I>Run command before simulation box is defined</I>

			<DD>The run command cannot be used before a read_data, read_restart, or
			create_box command.

			<DT><I>Run command start value is after start of run</I>

			<DD>Self-explanatory.

			<DT><I>Run command stop value is before end of run</I>

			<DD>Self-explanatory.

			<DT><I>Run command upto value is before current timestep</I>

			<DD>Self-explanatory.

			<DT><I>Run_style command before simulation box is defined</I>

			<DD>The run_style command cannot be used before a read_data,
			read_restart, or create_box command.

			<DT><I>Set command before simulation box is defined</I>

			<DD>The set command cannot be used before a read_data, read_restart,
			or create_box command.

			<DT><I>Set command with no atoms existing</I>

			<DD>No atoms are yet defined so the set command cannot be used.

			<DT><I>Set region ID does not exist</I>

			<DD>Region ID specified in set command does not exist.

			<DT><I>Shake angles have different bond types</I>

			<DD>All 3-atom angle-constrained SHAKE clusters specified by the fix shake
			command that are the same angle type, must also have the same bond
			types for the 2 bonds in the angle.

			<DT><I>Shake atoms %d %d %d %d missing on proc %d at step %d</I>

			<DD>The 4 atoms in a single shake cluster specified by the fix shake
			command are not all accessible to a processor. This probably means
			an atom has moved too far.

			<DT><I>Shake atoms %d %d %d missing on proc %d at step %d</I>

			<DD>The 3 atoms in a single shake cluster specified by the fix shake
			command are not all accessible to a processor. This probably means
			an atom has moved too far.

			<DT><I>Shake atoms %d %d missing on proc %d at step %d</I>

			<DD>The 2 atoms in a single shake cluster specified by the fix shake
			command are not all accessible to a processor. This probably means
			an atom has moved too far.

			<DT><I>Shake cluster of more than 4 atoms</I>

			<DD>A single cluster specified by the fix shake command can have no more
			than 4 atoms.

			<DT><I>Shake clusters are connected</I>

			<DD>A single cluster specified by the fix shake command must have a single
			central atom with up to 3 other atoms bonded to it.

			<DT><I>Shake determinant = 0.0</I>

			<DD>The determinant of the matrix being solved for a single cluster
			specified by the fix shake command is numerically invalid.

			<DT><I>Shake fix must come before NPT/NPH fix</I>

			<DD>NPT fix must be defined in input script after SHAKE fix, else the
			SHAKE fix contribution to the pressure virial is incorrect.

			<DT><I>Shape command before simulation box is defined</I>

			<DD>Self-explanatory.

			<DT><I>Sqrt of negative in variable formula</I>

			<DD>Self-explanatory.

			<DT><I>Substitution for illegal variable</I>

			<DD>Input script line contained a variable that could not be substituted
			for.

			<DT><I>TIP4P hydrogen has incorrect atom type</I>

			<DD>The TIP4P pairwise computation found an H atom whose type does not
			agree with the specified H type.

			<DT><I>TIP4P hydrogen is missing</I>

			<DD>The TIP4P pairwise computation failed to find the correct H atom
			within a water molecule.

			<DT><I>TMD target file did not list all group atoms</I>

			<DD>The target file for the fix tmd command did not list all atoms in the
			fix group.

			<DT><I>Target T for fix npt cannot be 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Target T for fix nvt cannot be 0.0</I>

			<DD>Self-explanatory.

			<DT><I>Temper command before simulation box is defined</I>

			<DD>The temper command cannot be used before a read_data, read_restart, or
			create_box command.

			<DT><I>Temperature ID for fix bond/swap does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Temperature ID for fix box/relax does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Temperature ID for fix nph does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Temperature ID for fix npt does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Temperature ID for fix nvt does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Temperature ID for fix press/berendsen does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Temperature ID for fix temp/berendsen does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Temperature ID for fix temp/rescale does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Temperature for fix nvt/sllod does not have a bias</I>

			<DD>The specified compute must compute temperature with a bias.

			<DT><I>Temperature region ID does not exist</I>

			<DD>The region ID specified in the temperature command does not exist.

			<DT><I>Tempering could not find thermo_pe compute</I>

			<DD>This compute is created by the thermo command. It must have been
			explicitly deleted by a uncompute command.

			<DT><I>Tempering fix ID is not defined</I>

			<DD>The fix ID specified by the temper command does not exist.

			<DT><I>Tempering temperature fix is not valid</I>

			<DD>The fix specified by the temper command is not one that controls
			temperature (nvt or langevin).

			<DT><I>Thermo and fix not computed at compatible times</I>

			<DD>Fixes generate values on specific timesteps. The thermo output
			does not match these timesteps.

			<DT><I>Thermo compute array is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Thermo compute does not compute array</I>

			<DD>Self-explanatory.

			<DT><I>Thermo compute does not compute scalar</I>

			<DD>Self-explanatory.

			<DT><I>Thermo compute does not compute vector</I>

			<DD>Self-explanatory.

			<DT><I>Thermo compute vector is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Thermo custom variable cannot be indexed</I>

			<DD>Self-explanatory.

			<DT><I>Thermo custom variable is not equal-style variable</I>

			<DD>Only equal-style variables can be output with thermodynamics, not
			atom-style variables.

			<DT><I>Thermo fix array is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Thermo fix does not compute array</I>

			<DD>Self-explanatory.

			<DT><I>Thermo fix does not compute scalar</I>

			<DD>Self-explanatory.

			<DT><I>Thermo fix does not compute vector</I>

			<DD>Self-explanatory.

			<DT><I>Thermo fix vector is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Thermo keyword in variable requires thermo to use/init pe</I>

			<DD>You are using a thermo keyword in a variable that requires
			potential energy to be calculated, but your thermo output
			does not use it. Add it to your thermo output.

			<DT><I>Thermo keyword in variable requires thermo to use/init press</I>

			<DD>You are using a thermo keyword in a variable that requires pressure to
			be calculated, but your thermo output does not use it. Add it to your
			thermo output.

			<DT><I>Thermo keyword in variable requires thermo to use/init temp</I>

			<DD>You are using a thermo keyword in a variable that requires temperature
			to be calculated, but your thermo output does not use it. Add it to
			your thermo output.

			<DT><I>Thermo style does not use press</I>

			<DD>Cannot use thermo_modify to set this parameter since the thermo_style
			is not computing this quantity.

			<DT><I>Thermo style does not use temp</I>

			<DD>Cannot use thermo_modify to set this parameter since the thermo_style
			is not computing this quantity.

			<DT><I>Thermo_modify pressure ID does not compute pressure</I>

			<DD>The specified compute ID does not compute pressure.

			<DT><I>Thermo_modify temperature ID does not compute temperature</I>

			<DD>The specified compute ID does not compute temperature.

			<DT><I>Thermo_style command before simulation box is defined</I>

			<DD>The thermo_style command cannot be used before a read_data,
			read_restart, or create_box command.

			<DT><I>Threshhold for an atom property that isn't allocated</I>

			<DD>A dump threshhold has been requested on a quantity that is
			not defined by the atom style used in this simulation.

			<DT><I>Timestep must be >= 0</I>

			<DD>Specified timestep size is invalid.

			<DT><I>Too big a problem to replicate with molecular atom style</I>

			<DD>Molecular problems cannot become bigger than 2^31 atoms (or bonds,
			etc) when replicated, else the atom IDs and other quantities cannot be
			stored in 32-bit quantities.

			<DT><I>Too few bits for lookup table</I>

			<DD>Table size specified via pair_modify command does not work with your
			machine's floating point representation.

			<DT><I>Too many atom sorting bins</I>

			<DD>This is likely due to an immense simulation box that has blown up
			to a large size.

			<DT><I>Too many exponent bits for lookup table</I>

			<DD>Table size specified via pair_modify command does not work with your
			machine's floating point representation.

			<DT><I>Too many groups</I>

			<DD>The maximum number of atom groups (including the "all" group) is
			given by MAX_GROUP in group.cpp and is 32.

			<DT><I>Too many mantissa bits for lookup table</I>

			<DD>Table size specified via pair_modify command does not work with your
			machine's floating point representation.

			<DT><I>Too many masses for fix shake</I>

			<DD>The fix shake command cannot list more masses than there are atom
			types.

			<DT><I>Too many neighbor bins</I>

			<DD>This is likely due to an immense simulation box that has blown up
			to a large size.

			<DT><I>Too many total bits for bitmapped lookup table</I>

			<DD>Table size specified via pair_modify command is too large. Note that
			a value of N generates a 2^N size table.

			<DT><I>Too many touching neighbors - boost MAXTOUCH</I>

			<DD>A granular simulation has too many neighbors touching one atom. The
			MAXTOUCH parameter in fix_shear_history.cpp must be set larger and
			LAMMPS must be re-built.

			<DT><I>Total # of atoms exceeds maximum allowed per GPGPU</I>

			<DD>See the doc page for a description of this memory limit.

			<DT><I>Tree structure in joint connections</I>

			<DD>Fix poems cannot (yet) work with coupled bodies whose joints connect
			the bodies in a tree structure.

			<DT><I>Triclinic box must be periodic in skewed dimensions</I>

			<DD>This is a requirement for using a non-orthogonal box. E.g. to set a
			non-zero xy tilt, both x and y must be periodic dimensions.

			<DT><I>Triclinic box skew is too large</I>

			<DD>The displacement in a skewed direction must be less than half the box
			length in that dimension. E.g. the xy tilt must be between -half and
			+half of the x box length.

			<DT><I>Tried to convert a double to int, but input_double > INT_MAX</I>

			<DD>Self-explanatory.

			<DT><I>Two groups cannot be the same in fix spring couple</I>

			<DD>Self-explanatory.

			<DT><I>Unbalanced quotes in input line</I>

			<DD>No matching end double quote was found following a leading double
			quote.

			<DT><I>Unexpected end of data file</I>

			<DD>LAMMPS hit the end of the data file while attempting to read a
			section. Something is wrong with the format of the data file.

			<DT><I>Units command after simulation box is defined</I>

			<DD>The units command cannot be used after a read_data, read_restart, or
			create_box command.

			<DT><I>Universe/uloop variable count < # of partitions</I>

			<DD>A universe or uloop style variable must specify a number of values >= to the
			number of processor partitions.

			<DT><I>Unknown command: %s</I>

			<DD>The command is not known to LAMMPS. Check the input script.

			<DT><I>Unknown identifier in data file: %s</I>

			<DD>A section of the data file cannot be read by LAMMPS.

			<DT><I>Unknown table style in angle style table</I>

			<DD>Self-explanatory.

			<DT><I>Unknown table style in bond style table</I>

			<DD>Self-explanatory.

			<DT><I>Unknown table style in pair_style command</I>

			<DD>Style of table is invalid for use with pair_style table command.

			<DT><I>Unrecognized lattice type in MEAM file 1</I>

			<DD>The lattice type in an entry of the MEAM library file is not
			valid.

			<DT><I>Unrecognized lattice type in MEAM file 2</I>

			<DD>The lattice type in an entry of the MEAM parameter file is not
			valid.

			<DT><I>Use of compute temp/ramp with undefined lattice</I>

			<DD>Must use lattice command with compute temp/ramp command if units
			option is set to lattice.

			<DT><I>Use of displace_atoms with undefined lattice</I>

			<DD>Must use lattice command with displace_atoms command if units option
			is set to lattice.

			<DT><I>Use of displace_box with undefined lattice</I>

			<DD>Must use lattice command with displace_box command if units option is
			set to lattice.

			<DT><I>Use of fix ave/spatial with undefined lattice</I>

			<DD>A lattice must be defined to use fix ave/spatial with units = lattice.

			<DT><I>Use of fix deform with undefined lattice</I>

			<DD>A lattice must be defined to use fix deform with units = lattice.

			<DT><I>Use of fix deposit with undefined lattice</I>

			<DD>Must use lattice command with compute fix deposit command if units
			option is set to lattice.

			<DT><I>Use of fix dt/reset with undefined lattice</I>

			<DD>Must use lattice command with fix dt/reset command if units option is
			set to lattice.

			<DT><I>Use of fix indent with undefined lattice</I>

			<DD>The lattice command must be used to define a lattice before using the
			fix indent command.

			<DT><I>Use of fix move with undefined lattice</I>

			<DD>Must use lattice command with fix move command if units option is
			set to lattice.

			<DT><I>Use of fix recenter with undefined lattice</I>

			<DD>Must use lattice command with fix recenter command if units option is
			set to lattice.

			<DT><I>Use of fix wall with undefined lattice</I>

			<DD>Must use lattice command with fix wall command if units option is set
			to lattice.

			<DT><I>Use of region with undefined lattice</I>

			<DD>If scale = lattice (the default) for the region command, then a
			lattice must first be defined via the lattice command.

			<DT><I>Use of velocity with undefined lattice</I>

			<DD>If scale = lattice (the default) for the velocity set or velocity ramp
			command, then a lattice must first be defined via the lattice command.

			<DT><I>Using fix nvt/sllod with inconsistent fix deform remap option</I>

			<DD>Fix nvt/sllod requires that deforming atoms have a velocity profile
			provided by "remap v" as a fix deform option.

			<DT><I>Using fix nvt/sllod with no fix deform defined</I>

			<DD>Self-explanatory.

			<DT><I>Variable evaluation before simulation box is defined</I>

			<DD>Cannot evaluate a compute or fix or atom-based value in a variable
			before the simulation has been setup.

			<DT><I>Variable for fix move is invalid style</I>

			<DD>Self-explanatory.

			<DT><I>Variable formula compute vector is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Variable formula fix vector is accessed out-of-range</I>

			<DD>Self-explanatory.

			<DT><I>Variable name for compute reduce does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Variable name for fix ave/atom does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Variable name for fix ave/histo does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Variable name for fix ave/spatial does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Variable name for fix ave/time does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Variable name for fix move does not exist</I>

			<DD>Self-explanatory.

			<DT><I>Variable name must be alphanumeric or underscore characters</I>

			<DD>Self-explanatory.

			<DT><I>Velocity command before simulation box is defined</I>

			<DD>The velocity command cannot be used before a read_data, read_restart,
			or create_box command.

			<DT><I>Velocity command with no atoms existing</I>

			<DD>A velocity command has been used, but no atoms yet exist.

			<DT><I>Velocity ramp in z for a 2d problem</I>

			<DD>Self-explanatory.

			<DT><I>Velocity temperature ID does not compute temperature</I>

			<DD>The compute ID given to the velocity command must compute
			temperature.

			<DT><I>Virial was not tallied on needed timestep</I>

			<DD>You are using a thermo keyword that requires potentials to
			have tallied the virial, but they didn't on this timestep. See the
			variable doc page for ideas on how to make this work.

			<DT><I>World variable count doesn't match # of partitions</I>

			<DD>A world-style variable must specify a number of values equal to the
			number of processor partitions.

			<DT><I>Write_restart command before simulation box is defined</I>

			<DD>The write_restart command cannot be used before a read_data,
			read_restart, or create_box command.

			<DT><I>Zero-length lattice orient vector</I>

			<DD>Self-explanatory.


			</DL>
			<H4><A NAME = "warn"></A>Warnings:
			</H4>
			<DL>

			<DT><I>All element names have been set to 'C' for dump cfg</I>

			<DD>Use the dump_modify command if you wish to override this.

			<DT><I>Atom with molecule ID = 0 included in compute molecule group</I>

			<DD>The group used in a compute command that operates on moleclues
			includes atoms with no molecule ID. This is probably not what you
			want.

			<DT><I>Broken bonds will not alter angles, dihedrals, or impropers</I>

			<DD>See the doc page for fix bond/break for more info on this
			restriction.

			<DT><I>Compute cna/atom cutoff may be too large to find ghost atom neighbors</I>

			<DD>The neighbor cutoff used may not encompass enough ghost atoms
			to perform this operation correctly.

			<DT><I>Computing temperature of portions of rigid bodies</I>

			<DD>The group defined by the temperature compute does not encompass all
			the atoms in one or more rigid bodies, so the change in
			degrees-of-freedom for the atoms in those partial rigid bodies will
			not be accounted for.

			<DT><I>Created bonds will not create angles, dihedrals, or impropers</I>

			<DD>See the doc page for fix bond/create for more info on this
			restriction.

			<DT><I>Dihedral problem: %d %d %d %d %d %d</I>

			<DD>Conformation of the 4 listed dihedral atoms is extreme; you may want
			to check your simulation geometry.

			<DT><I>Dump dcd/xtc timestamp may be wrong with fix dt/reset</I>

			<DD>If the fix changes the timestep, the dump dcd file will not
			reflect the change.

			<DT><I>FENE bond too long: %d %d %d %g</I>

			<DD>A FENE bond has stretched dangerously far. It's interaction strength
			will be truncated to attempt to prevent the bond from blowing up.

			<DT><I>FENE bond too long: %d %g</I>

			<DD>A FENE bond has stretched dangerously far. It's interaction strength
			will be truncated to attempt to prevent the bond from blowing up.

			<DT><I>Fix bond/swap will ignore defined angles</I>

			<DD>See the doc page for fix bond/swap for more info on this
			restriction.

			<DT><I>Fix move does not update angular momentum</I>

			<DD>Atoms store this quantity, but fix move does not (yet) update it.

			<DT><I>Fix move does not update quaternions</I>

			<DD>Atoms store this quantity, but fix move does not (yet) update it.

			<DT><I>Fix recenter should come after all other integration fixes</I>

			<DD>Other fixes may change the position of the center-of-mass, so
			fix recenter should come last.

			<DT><I>Fix thermal/conductivity comes before fix ave/spatial</I>

			<DD>The order of these 2 fixes in your input script is such that fix
			thermal/conductivity comes first. If you are using fix ave/spatial to
			measure the temperature profile induced by fix viscosity, then this
			may cause a glitch in the profile since you are averaging immediately
			after swaps have occurred. Flipping the order of the 2 fixes
			typically helps.

			<DT><I>Fix viscosity comes before fix ave/spatial</I>

			<DD>The order of these 2 fixes in your input script is such that
			fix viscosity comes first. If you are using fix ave/spatial
			to measure the velocity profile induced by fix viscosity, then
			this may cause a glitch in the profile since you are averaging
			immediately after swaps have occurred. Flipping the order
			of the 2 fixes typically helps.

			<DT><I>Group for fix_modify temp != fix group</I>

			<DD>The fix_modify command is specifying a temperature computation that
			computes a temperature on a different group of atoms than the fix
			itself operates on. This is probably not what you want to do.

			<DT><I>Improper problem: %d %d %d %d %d %d</I>

			<DD>Conformation of the 4 listed improper atoms is extreme; you may want
			to check your simulation geometry.

			<DT><I>Kspace_modify slab param < 2.0 may cause unphysical behavior</I>

			<DD>The kspace_modify slab parameter should be larger to insure periodic
			grids padded with empty space do not overlap.

			<DT><I>Less insertions than requested</I>

			<DD>Less atom insertions occurred on this timestep due to the fix insert
			command than were scheduled. This is probably because there were too
			many overlaps detected.

			<DT><I>Lost atoms: original %.15g current %.15g</I>

			<DD>A thermodynamic computation has detected lost atoms.

			<DT><I>Mismatch between velocity and compute groups</I>

			<DD>The temperature computation used by the velocity command will not be
			on the same group of atoms that velocities are being set for.

			<DT><I>More than one compute centro/atom</I>

			<DD>It is not efficient to use compute centro/atom more than once.

			<DT><I>More than one compute cna/atom defined</I>

			<DD>It is not efficient to use compute cna/atom more than once.

			<DT><I>More than one compute coord/atom</I>

			<DD>It is not efficient to use compute coord/atom more than once.

			<DT><I>More than one compute damage/atom</I>

			<DD>It is not efficient to use compute ke/atom more than once.

			<DT><I>More than one compute ke/atom</I>

			<DD>It is not efficient to use compute ke/atom more than once.

			<DT><I>More than one fix poems</I>

			<DD>It is not efficient to use fix poems more than once.

			<DT><I>More than one fix rigid</I>

			<DD>It is not efficient to use fix rigid more than once.

			<DT><I>New thermo_style command, previous thermo_modify settings will be lost</I>

			<DD>If a thermo_style command is used after a thermo_modify command, the
			settings changed by the thermo_modify command will be reset to their
			default values. This is because the thermo_modify commmand acts on
			the currently defined thermo style, and a thermo_style command creates
			a new style.

			<DT><I>No fixes defined, atoms won't move</I>

			<DD>If you are not using a fix like nve, nvt, npt then atom velocities and
			coordinates will not be updated during timestepping.

			<DT><I>No joints between rigid bodies, use fix rigid instead</I>

			<DD>The bodies defined by fix poems are not connected by joints. POEMS
			will integrate the body motion, but it would be more efficient to use
			fix rigid.

			<DT><I>Not using real units with pair reax</I>

			<DD>This is most likely an error, unless you have created your own ReaxFF
			parameter file in a different set of units.

			<DT><I>One or more atoms are time integrated more than once</I>

			<DD>This is probably an error since you typically do not want to
			advance the positions or velocities of an atom more than once
			per timestep.

			<DT><I>One or more compute molecules has atoms not in group</I>

			<DD>The group used in a compute command that operates on moleclues does
			not include all the atoms in some molecules. This is probably not
			what you want.

			<DT><I>One or more respa levels compute no forces</I>

			<DD>This is computationally inefficient.

			<DT><I>Pair dsmc: num_of_collisions > number_of_A</I>

			<DD>Collision model in DSMC is breaking down.

			<DT><I>Pair dsmc: num_of_collisions > number_of_B</I>

			<DD>Collision model in DSMC is breaking down.

			<DT><I>Particle deposition was unsuccessful</I>

			<DD>The fix deposit command was not able to insert as many atoms as
			needed. The requested volume fraction may be too high, or other atoms
			may be in the insertion region.

			<DT><I>Reducing PPPM order b/c stencil extends beyond neighbor processor</I>

			<DD>LAMMPS is attempting this in order to allow the simulation
			to run. It should not effect the PPPM accuracy.

			<DT><I>Replacing a fix, but new group != old group</I>

			<DD>The ID and style of a fix match for a fix you are changing with a fix
			command, but the new group you are specifying does not match the old
			group.

			<DT><I>Replicating in a non-periodic dimension</I>

			<DD>The parameters for a replicate command will cause a non-periodic
			dimension to be replicated; this may cause unwanted behavior.

			<DT><I>Resetting reneighboring criteria during PRD</I>

			<DD>A PRD simulation requires that neigh_modify settings be delay = 0,
			every = 1, check = yes. Since these settings were not in place,
			LAMMPS changed them and will restore them to their original values
			after the PRD simulation.

			<DT><I>Resetting reneighboring criteria during minimization</I>

			<DD>Minimization requires that neigh_modify settings be delay = 0, every =
			1, check = yes. Since these settings were not in place, LAMMPS
			changed them and will restore them to their original values after the
			minimization.

			<DT><I>Restart file used different # of processors</I>

			<DD>The restart file was written out by a LAMMPS simulation running on a
			different number of processors. Due to round-off, the trajectories of
			your restarted simulation may diverge a little more quickly than if
			you ran on the same # of processors.

			<DT><I>Restart file used different 3d processor grid</I>

			<DD>The restart file was written out by a LAMMPS simulation running on a
			different 3d grid of processors. Due to round-off, the trajectories
			of your restarted simulation may diverge a little more quickly than if
			you ran on the same # of processors.

			<DT><I>Restart file used different boundary settings, using restart file values</I>

			<DD>Your input script cannot change these restart file settings.

			<DT><I>Restart file used different newton bond setting, using restart file value</I>

			<DD>The restart file value will override the setting in the input script.

			<DT><I>Restart file used different newton pair setting, using input script value</I>

			<DD>The input script value will override the setting in the restart file.

			<DT><I>Restart file version does not match LAMMPS version</I>

			<DD>This may cause problems when reading the restart file.

			<DT><I>Running PRD with only one replica</I>

			<DD>This is allowed, but you will get no parallel speed-up.

			<DT><I>Shake determinant < 0.0</I>

			<DD>The determinant of the quadratic equation being solved for a single
			cluster specified by the fix shake command is numerically suspect. LAMMPS
			will set it to 0.0 and continue.

			<DT><I>Should not allow rigid bodies to bounce off relecting walls</I>

			<DD>LAMMPS allows this, but their dynamics are not computed correctly.

			<DT><I>System is not charge neutral, net charge = %g</I>

			<DD>The total charge on all atoms on the system is not 0.0, which
			is not valid for Ewald or PPPM.

			<DT><I>Table inner cutoff >= outer cutoff</I>

			<DD>You specified an inner cutoff for a Coulombic table that is longer
			than the global cutoff. Probably not what you wanted.

			<DT><I>Temperature for NPH is not for group all</I>

			<DD>User-assigned temperature to NPH fix does not compute temperature for
			all atoms. Since NPH computes a global pressure, the kinetic energy
			contribution from the temperature is assumed to also be for all atoms.
			Thus the pressure used by NPH could be inaccurate.

			<DT><I>Temperature for NPT is not for group all</I>

			<DD>User-assigned temperature to NPT fix does not compute temperature for
			all atoms. Since NPT computes a global pressure, the kinetic energy
			contribution from the temperature is assumed to also be for all atoms.
			Thus the pressure used by NPT could be inaccurate.

			<DT><I>Temperature for fix modify is not for group all</I>

			<DD>The temperature compute is being used with a pressure calculation
			which does operate on group all, so this may be inconsistent.

			<DT><I>Temperature for thermo pressure is not for group all</I>

			<DD>User-assigned temperature to thermo via the thermo_modify command does
			not compute temperature for all atoms. Since thermo computes a global
			pressure, the kinetic energy contribution from the temperature is
			assumed to also be for all atoms. Thus the pressure printed by thermo
			could be inaccurate.

			<DT><I>Too many common neighbors in CNA %d times</I>

			<DD>More than the maximum # of neighbors was found multiple times. This
			was unexpected.

			<DT><I>Too many inner timesteps in fix ttm</I>

			<DD>Self-explanatory.

			<DT><I>Too many neighbors in CNA for %d atoms</I>

			<DD>More than the maximum # of neighbors was found multiple times. This
			was unexpected.

			<DT><I>Use special bonds = 0,1,1 with bond style fene/expand</I>

			<DD>Most FENE models need this setting for the special_bonds command.

			<DT><I>Use special bonds = 0,1,1 with bond style fene</I>

			<DD>Most FENE models need this setting for the special_bonds command.

			<DT><I>Using compute temp/deform with inconsistent fix deform remap option</I>

			<DD>Fix nvt/sllod assumes deforming atoms have a velocity profile provided
			by "remap v" or "remap none" as a fix deform option.

			<DT><I>Using compute temp/deform with no fix deform defined</I>

			<DD>This is probably an error, since it makes little sense to use
			compute temp/deform in this case.

			<DT><I>Using pair tail corrections with nonperiodic system</I>

			<DD>This is probably a bogus thing to do, since tail corrections are
			computed by integrating the density of a periodic system out to
			infinity.


			</DL>
			</HTML>

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