Not working for me either, I am on windows 10 64bit.
btw it also seems the game has been updated to version 1.0.3, this is probably the reason.
Edit: Turns out the trainer is still working with version 1.0.3 and the reason I couldn't get it to activate is because I was trying to use texmod to change the buttons symbols to match the X360 controller, so it is either that or the trainer.
Plus for me I have to start the trainer after the game for it to work.