It is probably saved in the session from your previous attempt. I don't see the error. If you close and open your browser it will probably clear, or if you log in with a valid email address.
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.