[Zope] Site map question

Hi there, I'm using the simple site map script ( http://www.zope.org/Members/djay/SimpleSiteMap ) It works ok ONLY AFTER i authenticate myself as manager. For regular users (anonymous) it doesn't produce an error, but it's completely blank. Any ideas ? Dimitris Andrakakis http://atlas.central.ntua.gr:8000/~mc94068