http://bugs.winehq.org/show_bug.cgi?id=33178
--- Comment #2 from Rune Kristian Viken runevi@nwo.no 2013-03-10 19:34:09 CDT --- I *think* I've narrowed it down to happening, in game, when the Senate determines that my faction is too strong. It seems to crash the moment the Senate turns against the player.
Determined by re-loading older game and playing until crash, repeatedly.