I'd have to look into it. Sounds like an issue with session support, but if you give me a url and FTP access I'll debug it and let you know.
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.