Is this page accessible to the public? I.E. can you post a link?
Look for a missing <?PHP tag perhaps? Maybe you used <? and someone turned off the short open method (can't remember the name for <? versus <?PHP)?
EDIT: Downloaded the zip, extracted and hosted on my server.. looks nice, minus the broken images 🙂 Definitely hoping to find a link to your page... maybe if I can tell what PHP it's executing and what it's not, we can look at the code and see what the difference is. I notice a mix between <?php and <?, maybe you should keep that consistent (WITH WHAT WORKS!)?