I get the occasional crash as well. I'll take a note of the error to see if it's the same.
Hopefully the patch will fix it.
Moody, apparently the fix is to turn off DEP (data execution prevention) so I've turned mine off just for shift 2, and wait to see if it crashes again or not.
I'll quote from where I found the fix for someone else with the same exception code c0000005:
"The fix is rather simple, just turn of the Data Execution Prevention, or add the shift2u.exe as a exclusion the game should then run smoothly."
Changing Data Execution Prevention (DEP) settings in Windows 7
http://www.itechtalk.com/thread3591.html