My game runs pretty perfect on my vista 32 monster of a machine with the odd crash if i'm moving multiple armies on the map at the same time or when i'm at war with the first faction that comes up wen i end turn but with the trainer it crashes a little bit more.
Anyway i found that i can play a normal grand camp brit campaign (after i started again from scratch) and i can play my independence saves. It seems to be only my russian saves having the prob. It happened to me once before on rome TW once but the game ran fine after that.
Sorry for posting without waiting to see what the prob was first. My game has run fine with no crashes for since i stopped playing my russians.
I know its the game not the trainer sorry .
P.S. Its not steam that causes probs, it connection to the main server, check your location to see if its set on the right zone of the earth e.g. mine is UK & Ireland