try downloading a fresh copy of the power store files from the download center and replace the webassist/plugins/main_menu/menu.php file with the one at install/webassist/plugins/main_menu/menu.php fromthe download
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.