Description missing from product page

Hi there,

I have been setting up a site (www.sconchtextiles.co.uk) and either something I have done or one of the mods which is installed seems to prevent the description tab from displaying on the single product page.

I am using the custom theme Sellya and have a feeling that it may be something to do with the Facebook Comments module from iSense but do not know where to begin with debugging this.

Can someone point me in the right direction or take a look for me? The site is in maintenance mode at the moment as the address is a live address which customers are aware of.

Please help!

Thanks,

Hugh