there are glitches in autocad that cause certain drawings to crash without notice or sometimes fatal errors... (also a crash) its usually associatedwith 3d Orbit, sometimes i can open the same drawing in acad 2006 & it wont crash but will in 2007. other times the opposite is true. does anyone else have these problems? My video driver is NVIDIA gforce 6600 . I doubt that is the problem
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