This error often means you have deleted or moved the shopping cart file and the page is still trying to access a cart that no longer exists.
The solution is often to re-create the cart with the same name from a blank page on the site.
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.