= 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.
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== 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**
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You should change them to something with **Relative Paths**
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=== 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}
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== 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
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