ExhibitBuilder section item link varies from one install to another

Hi. I'll try and explain this best I can, we have a dev site, and a production site both have the same version of Omeka (1.5.3) and ExhibitBuilder (1.2.1). When you go to any section of exhibit in site "a" and click the thumbnail of an item you go to /omeka-dir/items/show/item #. On site "b" the same action takes you to /omeka-dir/exhibits/show/exhibit/section/item/item # and I can't figure out why they vary. ExhibitFunctions.php is identical on each install as is exhibit-builder>exhibits>show.php. I was given an impossible timeline for this so any help would be greatly appreciated. I'll put the URL's below. Thanks.

site a:

site b:

There's a setting in the Exhibit to use the current public theme, or to specify the theme. The links work a little differently depending on that setting, so I'm guessing that's where the discrepancy is coming from.

That was it, thanks Patrick.