Sorry to keep bugging you…but the “Shopping Cart” link in the popup that appears after adding a product to the cart doesn’t work…it doesn’t bring the user to the cart.
I actually tested this on your demo site (http://demo.snstheme.com/sns-sport/index.php/?___store=english) first to make sure it wasn’t something I did on our site that was causing it.
Attachments:

shoppingcart.jpg