Computer specification and program version, see this topic for what is required and please quote processor and graphics card make/model in full - I would suggest you put this information in your profile signature so we do not have to keep asking for it.
Are the graphics card drivers up to date?
A screen shot of the Program settings, Display options or Device options tab.
The amount of free space on the hard drive(s) you have.
Was there any error dialog that popped up when the crash occurred, if so what was the message?