Add To Cart - reposts to self with no product info
I have a strange problem. I have a page that is set to post the shopping cart view ("cart.php") however whenever I add it to the cart it reposts to itself, and there is no product information on the page. If I post again it's added to the cart properly. Any suggestions on how to troubleshoot this would be appreciated.
The page can be seen at:
And the code is attached.