"Unable to run AutoCAD. This may be due to the following reasons:
1)This version of AutoCAD was not installed properly. In this case, you may wish to reinstall AutoCAD.
2)You do not have sufficient rights to run AutoCAD."
I have tried reinstalling and still get this message when I try to bring it up and it just worked last week... any solutions???
this is usually related .net framework installation
if on win 7 Please try this
if not please cleanly uninstall and install all existing .net framework