Shopping cart not actually showing up on shopping cart page

Hi, for some reason when you click on the “shopping cart” link on my site after adding products, it takes you to the page and gives you the option to check out, but does not show the products you are purchasing or give you the option to add or remove them. Everything else seems to be working fine, but I would really like users to be able to view and remove products on this page.

I am on wordpress v 3.1.3. Any advice would be appreciated.