I have a 21.5", 2011 iMac running on Mac OS X Lion 10.7.3. I have the AMD Radeon HD 6750M graphics card and a 2.5 GHz Intel Core i5 processor.
I downloaded AutoCAD for Students, and it worked well for several days, but then began to crash whenever I would change layers. After successfully restarting AutoCAD after those crashes, it now crashes before fully opening and has not been able to open for several weeks.
I get the error message: Unhandled Exception (Version E.49.H.554(x64)). I have looked through other threads for a solution; this version of AutoCAD apparently doesn't support the AutoCAD 2011 for Mac updates though?
I have tried to install all three updates, but have never succeeded. Each time I try, I get the message "You do not have a copy of AutoCAD installed which can be updated."
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