Here's the situation...

Installed the trial of ACLT'15 under Yosemite, and upgraded to El Capitan Public Beta 1.  ACLT'15 trial worked under Yosemite, AND under El Cpiatan Public Beta 1.  HOWEVER...

I purchased ACLT'15, and the trial expired....  Apparently something is keeping the OS from connecting to Autodesk's servers for registration.  I can't register the software, whcih means I can't USE the software!  

Every time I try to launch ACLT'15, I can't get past the registration because the server can't be found.  (I feel this is a networking issue in El Cap as my CIsco AnyConnect Mobility Client won't launch either.)

VIDEO LINK Attempting to Launch ACLT'15 under El Cap PB3

I've tried uninstalling, tracking down and manually deleting all preferences, but the issues remains.  (Issue has remained throughout PB2, PB3 and in today's released PB4)

Would LOVE to use the software I paid for...

12" MacBook (2015)
El Capitan Public Beta 4