Version 1.32 running through Steam.

My most recent debug.err file is here - http://pastebin.com/jfiQyiTY

My programdata files for the last 6 crashes are all here - https://www.dropbox.com/sh/ngnevap8agml9or/jEt_4gQIz0

My video card drivers are fully updated.

Crashes seem to occur after the game has been running for about 30 minutes fairly regularly. They do not appear connected to any in game activity, bar perhaps the end of a turn, ends of turns seem to get slower as the game goes on. 

I've disabled everything extra that I can find running in the background etc, but that doesn't seem to make much difference to the crashes. 

This seems to be a really good game but I'm not going to stick with it if this level of instability cant be resolved, please let me know if there's anything obvious to try!