not come across this one before, but now you have an error, it will be easier to diagnose.
this thread may help,
http://www.webassist.com/forums/posts.php?id=19490
otherwise Jason from WA will have to step in
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.