Make sure the Dreamweaver site definition is set to the root of the power store files.
If the power store files are in a sub directory of the Dreamweaver site, you will not be able to use the extensions to edit the behaviors.
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.