Thank you so much. I'm reluctant to mark this as answered because it will disappear. Also, due to surge of frustration, I did not include my OS, which would have been helpful. Since I spent 40 minutes waiting for the Chat Support, let me try to help someone who has this question as well, and is using a Mac. Launch the Creative Cloud Desktop App. Or open a Finder window and Search on 'Adobe Creative Cloud'. Choose 'Open' from the application you want to revert; then 'Manage', then 'Other Versions'. The highest one on the list will be the previous version. If you already tried trashing Preferences for this application to resolve the wonkiness in the new version, check your Trash to see if they are still there and retrievable. If they are and you've already launched the reinstall, you can replace the new folder with the old one and life should improve dramatically. It did for me.
... View more