Currently using: v1.5.5a with Responsive Classic Template

It’s been a while since I last needed to post a question – this has really got me stumped.

When I place items in the cart, the right hand side boxes disappear.

If I continue shopping or go to any other page the right hand side boxes remain invisible.

However, if I remove the items from the cart, the right hand side boxes reappear.

I would like the right hand side boxes to remain visible on all pages so any ideas as to why this is happening and how to stop it would be much appreciated.

To see live, please follow this link and add the product to the cart:

http://www.futuregarageservices.co.u...t-p-16969.html