Shopping Cart Always Empty

I truly don't know what happened here. This is an older cart that I built with late version 3 or early 4. The server where the site was hosted changed their file structure and SSL setup so I had to go in and change the links for the redirect on the checkout page so it would transfer the cart contents to the secure checkout form.

I only changed the link on the checkout button to transfer the cart contents. Uploaded the new page, and now the shopping cart (not the page I updated and was working perfectly) is not receiving the data from the add to cart buttons. Just says Your Cart Is Empty.

Truly don't know how I affected the shopping cart page by working on the checkout transfer contents page.

here is the URL shoppingcart.php

I looked through the forums and tried the solution about adding session_commit(); line, but that did nothing for me.

Any help would be greatly appreciated.

Stephen