“- Crash right at gamestart (but not in or before start menu):
This is very likely memory related. Do not try running the game in 32 bit Windows (this is not officially supported). If you still want to experiment with 32 bit Windows, be aware that it may crash. More importantly it will definitely crash if you do not set your machine to allow more than 2GB of physical memory. There are tricks to achieve this but in general the rule is: Use a 64bit Windows! UPDATE: Patch 1.12 will give you a message at the start if the game has zero chance of running because of "out of memory" and not even start!”