Dear Tech Support,

I was able to install autocad 2013 software on newest Mac os 10.10.4, Yosemite by downlaoding a newer software from the link below.

http://knowledge.autodesk.com/support/autocad-for-mac/downloads/caas/downloads/content/autocad-2013-...

However, I was not able to launch the autocad 2013 after my installation. 

Please see the error message from attached image.  

I did find a smiliar problem from this forum, but the solution is only for windows users. 

http://knowledge.autodesk.com/search-result/caas/sfdcarticles/sfdcarticles/License-error-0-0-0-at-st...

Would you please advice me how to solve my problem?

Thanks,

John