After deactivating flash pro after acrobat stopped working in CS6, all programs converted to Trial Versions. How do I reactivate? Is the only solution to delete all programs and download CS6?

When you deactivate one program of a Suite the entire Suite is deactivated.  You should be able to reactivate by opening one of the programs and choosing Help -> Activate.  If that does not work then you probably need to uninstall the Suite and reinstall it.