I can consistently reproduce a crash in Klathzgar (south of old tower way shrine in Bangkorai). After entering, take the left fork. At the bottom of the stairs is a group of two spheres and a spider. Every single time I pull this group the game immediately crashes.
I've sent numerous crash reports, the only thing I can think of is that this group has a spider in it where as the enemies prior to is are spheres and centurions.
I am using the Mac client, and have tried with varying graphics settings.