the instructions clearly say TURN OFF OPTIONS when not needed-

I used every option on the new DLC Shogun 2 and it works perfectly I went 10 turns with no problems. I conquered 2 provinces and I created buildings, units, and mastery of the arts research. I used XP and ranking options and etc.

people are turning on options and NOT turning them off. that is likely what is fubar their game. in fact if they did this 2 turns ago, it may not crash the game right away, etc. I don’t know of another way to do this other than how we been doing it the last 3 games in this series. this is nothing new- turn options on then do stuff then turn them all back off and then end turn.

if you (for whatever reason) think the trainer is causing your crash before you enter combat, then save the game before combat then restart game and enter combat with no trainer attached. i am not having this issue here so i cannot replicate your problems.

we are using LEGIT STEAM version of the game, BTW-

It is a annoyance now, sure. But it's manageable. Maybe the next patch that is released by CA will erase this issue :]