The first step to find the cause for any trouble with our trainers is to verify if the versions of trainer and game still match. Even though our trainers should still work through updates sometimes they don't.
The game got updated yesterday and is now at least on v22.214.171.1244.
Please use the update notification system to report a game patch, update or to report that the trainer may not be working with the latest version of the game. If 3 or more reports have been filed, consider BOOSTING the priority of this title for a faster turnaround on the updated trainer.
Yes, I have done all you have mentioned. Still the game CTD after a couple of minutes play. Btw, there is a new version from GOG - 126.96.36.1994 on their website.