Awesome patch as always! A really welcome change is the new setup screen layout which makes much more sense now, and the tweaks to the AI seems rather nice too. I had a great 90 min race with the AI, many times fighting for position in a 4 car group. Thanks for all the efforts!
Please run GTR2_DEBUG.BAT then after crash, go to UserData\log\ and open trace.txt with notepad : scroll down to last lines and the reason why GTR2 crashed should be written.