i got this last week with divine divinity, except it was when i attempted to open a trade window with anyone. Raze was very helpful but nothing worked except to delete my save game. I had two characters going, one character was fine, the other one would crash to desktop when trading. So i deleted all savegames, started a new character and it all works fine. You could try removing your savegame (copy it to the desktop or something) so that IF that solves the problem, you can start afresh, and if it doesn't solve the problem, you don't have to lose your characters.
