The page after deleting all items in your cart

Hi there,

Here's a Hikashop problem I'm rather lost with...

Go to www.claycellar.org/index.php/books , add the first item to the shopping basket, click on the shopping basket in the top right hand corner and then delete the item so that the basket is empty again...

The page displayed next is a rather messed up version of the Books product listing (address: www.claycellar.org/index.php/books/product/listing ). What's causing this? Is there any way of setting the page that you are directed to after emptying your cart? If any, I would probably want it to always go to " www.claycellar.org/index.php/shop ".

Many thanks,

Jonathan