The error is listed in the post.
This happens when I add the add to cart button and attempt to bind it..
No problems whatsoever with 4.5.1
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.