Updated the WP-Ecommerce plugin last night to version 18.104.22.168 - now the site won't work.
You can add products to the cart but when you proceed to checkout this gives you Internal Server Error. So I de-activated each plugin one by one and found The "Internal Server Error" stopped when I deactivated WordPress SEO plugin however that then only loads the header and primary navigation. And won't proceed any further.
The website is totally4.com
Is there a fix coming soon for this?