Sign Out When Sign In http://forums.adobe.com/thread/1450581?tstart=0 may help
-and 'looping' https://forums.adobe.com/thread/1504792
Mac Spinning Wheel https://forums.adobe.com/message/5470608
Tried all this, even the answer about the LAN proxy settings, but it doesn't work.I'm sorry.
I'm having the same problem. I'll let you know if I ever get hold of support. Tele support hangs up after 20+ minute hold time and Chat I'm still waiting at 18 minutes.