= QuPath no longer opens the images in your project = If QuPath opens the **project** but gives you an error whenever you try to open an image, there are 3 common causes. {F10333316, size= full} == 1. Your images are no longer there == Check the path that is written in the error log, like in the example above, and make sure that they are there == 2. The project has absolute image paths and was moved == This is the most common cause. According to our Guidelines, you should always have your images in a subfolder inside your project folder: ``` Project folder/ |---> images/ |---> **Your images here** |---> project.qupproj ``` To check this, go to your project folder and open the `project.qpproj` file with Notepad. Scroll to the end of the file. If you see something with **Absolute Paths** {F10333342, size=full} You should change them to something with **Relative Paths** {F10333350, size=full} === How to do it === The idea is that if the images are in a subfolder of your project folder, QuPath //should// be able to use **relative paths**. So what you need to do is replace the absolute path (like `Z:\\biop\\IMAGE PROCESSING\\7-Projects\\VSI Reader`) to `{$PROJECT_DIR}` In Notepad++ you can use Replace {key CTRL H} {F10333368, size=full} == 3. You are missing an extension to open the images == Please make sure that the BioFormats Extension is installed. You can check this by going to {nav Help > Installed Extensions} and making sure that it is present {F10333308, size = full}

= QuPath no longer opens the images in your project = If QuPath opens the **project** but gives you an error whenever you try to open an image, there are 3 common causes. {F10333316, size= full} == 1. Your images are no longer there == Check the path that is written in the error log, like in the example above, and make sure that they are there == 2. The project has absolute image paths and was moved == This is the most common cause. According to our Guidelines, you should always have your images in a subfolder inside your project folder: ``` Project folder/ |---> images/ |---> **Your images here** |---> project.qupproj ``` To check this, go to your project folder and open the `project.qpproj` file with Notepad. Scroll to the end of the file. If you see something with **Absolute Paths** {F10333342, size=full} You should change them to something with **Relative Paths** {F10333350, size=full} === How to do it === The idea is that if the images are in a subfolder of your project folder, QuPath //should// be able to use **relative paths**. So what you need to do is replace the absolute path (like `Z:\\biop\\IMAGE PROCESSING\\7-Projects\\VSI Reader`) to `{$PROJECT_DIR}` In Notepad++ you can use Replace {key CTRL H} {F10333368, size=full} == 3. You are missing an extension to open the images == Please make sure that the BioFormats Extension is installed. You can check this by going to {nav Help > Installed Extensions} and making sure that it is present {F10333308, size = full}

= QuPath no longer opens the images in your project = If QuPath opens the **project** but gives you an error whenever you try to open an image, there are 3 common causes. {F10333316, size= full} == 1. Your images are no longer there == Check the path that is written in the error log, like in the example above, and make sure that they are there == 2. The project has absolute image paths and was moved == This is the most common cause. According to our Guidelines, you should always have your images in a subfolder inside your project folder: ``` Project folder/ |---> images/ |---> **Your images here** |---> project.qupproj ``` To check this, go to your project folder and open the `project.qpproj` file with Notepad. Scroll to the end of the file. If you see something with **Absolute Paths** {F10333342, size=full} You should change them to something with **Relative Paths** {F10333350, size=full} === How to do it === The idea is that if the images are in a subfolder of your project folder, QuPath //should// be able to use **relative paths**. So what you need to do is replace the absolute path (like `Z:\\biop\\IMAGE PROCESSING\\7-Projects\\VSI Reader`) to `{$PROJECT_DIR}` In Notepad++ you can use Replace {key CTRL H} {F10333368, size=full} == 3. You are missing an extension to open the images == Please make sure that the BioFormats Extension is installed. You can check this by going to {nav Help > Installed Extensions} and making sure that it is present {F10333308, size = full}