Same problem
I did the troubleshooting step you suggested (deleted the DAT file) and it didn't help. I'm getting three error message screens:
First screen - -
While executing on Reize in WA_Site Tools_Progress.htm,
the following Javascript error(s) occurred
In file "WA_SiteTools_Progress"':
refreshUI is not defined
Second screen (paraphrase) - -
At line 160 of the file WA_SurveyorXML.js,
MM.WA_createprocessingobject is not a function
Third screen - -
While executing selectionChanged in WA_SiteTools.htm, a JavaScript error occurred
I am running the latest version of Surveyor (1.0.4) on Dreamweaver CS4. It is not working. So, what next??