I removed the user configuration file (/users/[username]/Library/Application Support/Adobe/Dreamweaver (version)/en_US/Configuration/) every time and removed the Adobe Dreamweaver CS6 Prefs.
removed the Databridge extension, started and closed CS6, re-installed the extension.
IF I can't go back to CS6 should I remove it and all config. and pref. files before reloading DW CC?