Psst, the trainer is for the beta version for now.
So it will probably not work for the release on steam either. 😉
Just wait a bit.
I have test the beginning of the campaign and the skirmish mode and from now the options seems to work. But i suppose that the beta (so the trainer too) was on the beginning of the game (i don't know because i don't have made the beta).
Thank you Cal.