It looks like you have included the /public_html/ folder in your site url path in your Dreamweaver Server settings. You should remove that from the url.
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.