Can't see images in WP-Ecommerce plugin shop ?

Hi

I have setup a shop using WP- E commerce plugin and all seems well, however when you click on a product to see more information the image attached is lost and just the alt or tile shown instead.

I’ve seen this issue several time in other forums but there doesn’t see to be a definitive answer, surely there has to be one as th plugin doesn’t work otherwise ?

Any help or advice would be absolutely great.

Thanks