Brad, I did some research on this and it is a configuration issue between most of your site and the multimedia page. The working 'multimedia' section is configured to use blox ad manager's default vast feed, while the rest of the site is configured to use DFP. Please submit a support ticket, you can reference the research ticket I submitted (#724371), to have this corrected.

Brad, I'm checking with Templates to find out if this is expected behavior or not. More details to come.