[[UREGENT]] AutoCAD 2013 Mac does not LAUNCH

[theimperialdragon]

AutoCAD 2013 Mac does not LAUNCH

Mac OS X 10.7.3, MacBook Pro 6,2, 2.66GHz i7, 8GB RAM

In 2011, I used AutoCAD 2012 for Mac without many much problems.

When AutoCAD 2013 was released, I downloaded it from the Educational Site and installed it.

Now both my 2012 and 2013 versions are unable to launch 

- the dock icon would bounce and the small AutoCAD loading window (see attached) would sometimes show up and then after a couple of seconds, the application would just quit.

I've tried uninstalling both and installing ONLY the 2013 version - but it still does not launch.

I URGENTLY need help on this issue as I have a few school projects on hand.

Would appreciate if anyone could help - contacted someone from AutoDesk support but he hasn't gotten back to me yet.