Hi Jason
Just thought you would like to know a solution to this. I have had the same problem as Jake: "Error in uiInitialize: TypeError: XML String has no properties" and this post http://www.webassist.com/forums/posts.php?id=33338.
If you delete Configuration/shared/webassist/dataassist/autosave.xml the problem solves (note Dataassist folder not databridge)
Hope this helps
scott