you would need to uninstall all extensions, then install the older extensions, security assist, Universal Email and Data Assist, then install Design Extender last.
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.