# Troubleshooting

### Pragma crashes on startup

If Pragma crashes on startup, please ensure that your system fulfills the [system requirements](https://wiki.pragma-engine.com/books/pragma-engine/page/download#bkmrk-%5Bwip%5D) and that your graphics drivers are up to date.

If you have multiple GPUs, please make sure to enable your high-default GPU as the default for Pragma. You can follow the instructions [on this page](https://pureinfotech.com/set-gpu-app-windows-10/) to do so.

### There is no text in the main menu

Try adding `-graphics_api vulkan` to the launch options in Pragma to switch to the Vulkan renderer:

[![firefox_2020-08-21_09-35-29.png](https://wiki.pragma-engine.com/uploads/images/gallery/2020-08/scaled-1680-/firefox_2020-08-21_09-35-29.png)](https://wiki.pragma-engine.com/uploads/images/gallery/2020-08/firefox_2020-08-21_09-35-29.png)

### I have an AMD GPU and Pragma/PFM crashes on startup

This should be fixed in newer versions of PFM, until they are released publicly, you can try this temporary fix:

1. Go to the Pragma root folder
2. Remove the `cache` directory
3. Go to `Pragma/shaders/world/eye/`
4. Rename `fs\_eye.gls` to `fs\_eye\_bak.gls`
5. Launch PFM

Character eyes won't be rendered properly in the real-time render viewport, but it shouldn't be freezing anymore.