It seems the trainers no longer work with Fallout 1, Fallout 2, and Fallout Tactics from GOG. I recently had a hard drive failure, and I just re-downloaded them from the GOG site. I noted they were now titled "Fallout Classic," "Fallout 2 Classic," and "Fallout Tactics Classic." I think this is keeping the trainer from recognizing the game has been launched. I cannot seem to get any of the trainers for those three games to recognize the games are running.
Any help would be greatly appreciated. Thank you!
Have you checked to see if they changed the *.exe file?