For me it's the same!
uninstalled and installed fresh 4 times now and it doesn't work at all.
can't work anymore!
BLANK Cloud Screen http://forums.adobe.com/message/5484303 may help
-and step by step http://forums.adobe.com/thread/1440508?tstart=0
Online Chat Now button near the bottom for Activation and Deactivation problems may help
Got it!! My friend helped me through it. Make sure Creative Cloud is completely closed. Search "%appdata%" .Open up the folder. Should bring up Appdata > Roaming in the bar on top. Click on appdata and you should see a folder that says "Local". Once in local, go to ADOBE then OOBE and you will see obd.dm or it'll just say obd. Just change it to "opm_old" (without quotes) and you should be good to open CC!!
So my computer cannot find this file anywhere, and I have searched and cannot find it manually. Has the file structure (mac) been changed in updates or something similar?