I'll need to look at the files referenced in the errors:
Prod_results.php
It looks like that page has an add to cart server behavior that needs to be re-applied.
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.