I've got the same issue! I played it both on Windows 7 x64 and Ubuntu, and it always crashes! I can't even play normally! I'm playing like 10 minutes and that's it! I'm constantly losing ALL my progress. I started to make save games more often, but sometimes doing that also causing the CRASH!
There's a memory leak in your game, obviously. Here's what the crash handler gives me:
I really liked that game, but constant crashes make it unplayable and unenjoyable at all.
I've also got this:
crashlog.dmp
crashlog.txt
crashlog.txt