Thanks Jeff. This is a brand new wordpress site. I have only applied a theme (Storefront Paper) and installed the wp-ecommerce plugin. I do not have any kind of object cache.
It’s a weird error. I get it every time I visit any page on the site, including the home page. The only exception is if I am logged into wp-admin. I can actually browse the site with no errors if I am logged in; however once I logout I receive the error again.