I went back and changed the type settings in the eCart Object columns back to text, and went to the server behaviors for eCart Store Details in Database (orderdetails, eCarte1) for the confirm page and changed Product_id from numeric to text and the error went away. The window opened, but gave me a new error. I've attached the screen shot of the checkout_success page showing the error message and a zip file of the page itself. I looked at line 61, but haven't a clue as to how to proceed.
It feels like we're sneaking up on the solution. Thanks Jimmy.