Do you have any security, virus scan or firewall software running? If you do, try disabling those before trying the extension again to see if that will help.
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.