If you have newish PC with windows 10, and if AIM2 keeps crashing, this might help.
How to Fix Crashing
If you have tried all other tricks, then here is what worked for me
What I did was that I turned off the Variable framerate feature from Nvidia control panel and from monitor’s own settings.
Then I went to 3D-settings for every program. I added AIM2.exe to list and changed many of its settings to differ from global settings (below).