Put the summary of the bug you're having here
What I expected to happen was...:
Save and exit.
What actually happened was...:
Game froze up and got a not responding message on the application window that did not end. Eventually I just decided to try to close the window and got this error.
Steps to Reproduce:
1. Start a game.
2. Save and Exit.
3. Get the error.
I am going to investigate changing video driver versions to others versions to see if that fixes the issue since this seems related to OpenGL.