The latest beta crashed on me in the middle of writing (Win 7/x64); I wasn’t doing anything abnormal at all. Does it automatically send you a crash report? Otherwise I’m not sure how to submit useful feedback about the crash.
Do you remember what you were doing when it crashed? Can you get it to crash again? Were you in fullscreen mode? Were you looking at text or the corkboard, or?
No detail is too insignificant. 