All it says is exception so I do not know what type. Whenever I scroll over the tool tip "i" icon next to something in the settings menu with my mouse it causes a white screen crash. I have tried this approximately 5-6 times and have been able to recreate it every time. This is a very consistent and repeatable event and it is also extremely easy for me to cause as just the act of passing over said tool tip icon and holding it for a about 2 seconds will cause this crash. Other than this I am loving the new setup and layout of the official mod manager and I hope this helps to improve it.