I encountered this in a drawing when creating a new view port. If I create the new view port and select the view port scale or annotation scale, the entire computer locks up for 3 minutes then a window pops up with this message:
FATAL ERROR: Unhandled Access Violation Reading 0x0004 Exception at 78144e9ah
I select "ok" and then a message appears that says AutoCAD has to close and asks if I would like to save. I have tried saving, not saving, saving as, recovering, auditing and purging but nothing seems to work. I'm using AutoCAD LT 2008. Anyone have any suggestions?