-- Google Sync -- fixed, used official Google Task API. Existing Google accounts in iRT GTasks Outliner need to be deleted then added back because of old Sync ID's. The deletion/addition of account can be done in Preferences -> Account Manager.
-- Dropbox Sync -- If iRT Gtasks Outliner fails to start on another device due to Dropbox Sync, backup the working device to Dropbox then reinstall the app on the failing device and restore database.