I'm migrating from WSS 3.0 to MOSS 2007, below are the steps I took to migrate. Backed up the content database of our WSS 3.0 site. Restored the database on our MOSS 2007 database server Create a new Web Application on our MOSS 2007 server and pointed the database to the newly restored database. Everything works correctly on the new server. I enabled Office SharePoint Server Publishing Infrastructure and navigations stops working correctly. Where it use to say Home it now says /. When I clicked on a link to any sub sites the top navigations reduces down to one button that says Error. Also any sub site navigation on the side bar reads Error. When I disable Office SharePoint Server Publishing Infrastructure everything goes back to the way it was.