I posted a screenshot of a similar error that I keep receiving when starting my AutoCAD 2012 on my Mac PC with OS X Lion. I keep seeing this error when trying to log In with my account and start the program. Does Mac have a tech support for AutoCAD 2012? If so, can someone give me a link or help me in solving this issue? Thanks.

FATAL ERROR: Invalid Configuration path
\filename: /Users/myusername/Library/Application
Support/Autodesk/local/AutoCAD 2012/R18.2/enu/
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If you are using other Adobe software like (Illustrator, Photoshop, InDesign …), the problem is that the software from Adobe, use similar with AutoCAD licensing mechanism (FLEXnet), then AutoCAD during first start can not write license information in the folder “/Library/Preferences/FLEXnet Publisher”.
So you can do the following: