Same here i got a Nvidia GeForce 240 and 4 gigs of ram.
I hear its due to the problem that steam has a limit to its applications of 2 gigabites and that solved it for some people. Used my Large Address aware program that enables steam applications to use more than 2 gigs of ram still didn't help with the crashes in battle.
Edit: lowered graphics to very low. managed to play one skirmish battle without CTDing but keep crashing when attempting to battle in mp campaign.
Last edited by Magus65; 01/07/13 01:19 PM.