Mac OS X / Mavericks
Running CC 2014 and CS6 applications.
Did a hard drive upgrade, and used Migration Assistant, much like Arf thuis mentioned, now Creative Cloud opens but is blank.
Followed the steps in Cloud Desktop App is blank?
Deleting AAMUpdater and AAMUpdaterInventory and OOBE. Not sure how renaming opm to opm_old.db is supposed to help since opm.db gets recreated upon launch anyway.
Have uninstaller and reinstalled several times now.
Sidenote: Tried to uninstall some Adobe applications after reinstalling the new CC and received error:
"Adobe Applicaiton Manager is needed to resolve this problem. However, it is missing or damaged."