The issue is probably on the page:
navigation/page-navigation.php
I'm probably going to need a url to see the issue and FTP access to debug this one.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.