Go to
Edit->WebAssist Preferences
and disable the preview. Does that allow the interface to work?
What version on IE do you have installed? What OS are you on?
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.