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You can try these steps:
1. quit the app (from the task bar) and relaunch. if that fails:
2. Remove the OPM.db file and relogin into the Creative Cloud desktop application using the Adobe ID tied to your subscription.
Mac OS: You can locate the OPM.db file in the \User\<user name>\Library\Application Support\Adobe\OOBE folder. To access the hidden user Library folder, see Access hidden user library files | Mac OS 10.7 Lion.
Windows: You can locate the OPM.db file in the \Users\<user name>\AppData\Local\Adobe\OOBE folder. To view the hidden AppData folder, see Show hidden files, folders, filename extensions | Windows XP, Vista, Windows 7.
This is from Post : http://forums.adobe.com/thread/1342079
Please let us know if it worked.