CRE Image issue

We had some custom work done on a new site by our last freelancer. The work was done on a temp ip until we were ready to switch over and go live. The work was completed and worked fine, so we went live. Now the popup windows for some images from the custom work does not work and the freelancer that completed the work will not return our emails. Example, If you go here; [login to view URL] Then click on "View personalized tags" the popup brings up a 404 error page on internet explorer. It works fine in Fire Fox. We are using CRE Loaded B2B and need the work dones ASAP.