Hola -
Been playing a Large map with 3 opponents. Game r ran ather somewhat smoothly (other than a battlefield bug and a the unable to end turn auto-explore bug).
I got to turn 350ish, and the game starts CTDing. It seems to happen right after a battle, but I've been unable to recreate the precise cause. I am using a custom Kingdom and a custom sovereign.
Crash file:
http://pastebin.ca/1938645