Blank Checkout Page (No Grid/Options)

Hello,

I've tried to tinker with my settings and checked the other postings for an indication of what I am doing wrong. I think I'm running into a theme issue here, but I can't get the Checkout page to display correctly, it just appears as a blank page titled 'Pro Sites'. Please check it out here http://www.urbanruckus.com

Test Account Credentials:
L: testacct1
P: testuser

Thanks!