The F12 screenshot issue is from Steam itself. You can change that key in the Steam Settings Menu.
Trainer works flawlessy so far. But I've not been using the "Freeze"-option.
There is one question I have and would like to have feedback from other trainer users. If I activate the trainer and play the game, I get like -137 skill points in the skills menu. Already checked and without the trainer I do not have this issue. Right now I'm ignoring the problem by filling up the deficit to zero respectively the amount of skill points I would have gotten through level ups.
Maybe someone could look into this. =)
This made me a very happy lady - the solution to the crashing of the game was indeed to change the F12 screenshot in the Steam settings menu. Thanks so much
Yep, skill points are in minus too.