eCart - continue shopping, update cart, checkout etc. not working

Hey there,

I have built a second information cart onto my site simply to show off a few items so our customers will be able to request more information on. (That's teh next step) However since installing Data Bridge I have found it a little different and it's not working as smoothly as it was before.

I have the cart working so that it populates the cart (add to cart buttons) and I can clear the cart or update quantities ... however ...

... if i click on any of the buttons it simply returns to cart.php? as a blank page. If I hit refresh then the changes appear like updated quantity or remove an item. I cannot however get to the checkout pages or to "continue shopping". It all stays on the cart.php page ignoring the redirect.

Any ideas? I have attached my cart.php page for review.