Buy Now Button not working anymore. Columnar layout?

I am having an issue with the following site WWWDOTadulttoybinDOTCOM.

Warning!!! site contains adult content. Toys to be exact.

installed in the store are the following mode

Magic SEO URLs
Columnar product layout
google analytics

For some reascon when you go to the product listing page and click buy now, it does not add the itemt to your cart.

I have contacted the Magic SEO developer and he says it is not related to his product, so i am now pointing the finger at the columan layout contribution. I havent the slightest of how to fix the prolem unfortunately. any help would be appreciated.

Thanks,

UPDATE:

I decided to uninstall Magic SEO and voila, that fixed the problem. So I know it is what is causing the problem. I have forwarded this to the developer and will see what he comes back with.