I renamed the configuration folder as outlined.
Started Dreamweaver to create a new configuration folder - ok.
Removed all the Webassist extensions and reinstalled them.
Same problem persists.
At some point along the way previous I may have entered an old serial number for Data Bridge. I was selecting from the website and picked an older one - not sure. When uninstalling completely and reinstalling I think it only asked me for one of the serial numbers.