The trainer is not activating when I press F1.
That's odd because I just played it. When the opening screen comes on that says "press any key", I press F1 and "trainer activated". Goes to next screen, continue game. Then I can use options in game normally.
I do experience random crashes. Don't know if it is just a buggy game or I probably get a conflict using widescreen fixer to change fov for multi-monitor.
I don't have the Steam version but the Uplay version and it works with the latest trainer for me.
I resolved the problem.