Have you guys tried the current trainer on the GOG version?
Yeah, doesn't work for me. But I'm using the Sneaky patch mod for the game to run it in wide screen 1920x1080 with HD textures and crash fixes so I don't know if that has anything to do with it. It's amazing to see this game in 1920X1080 with the HD textures though. Smooth as silk, no crashes, and very enjoyable.