[Zope] Squishdot with access restrictions

Howdy Zopistas! Has anyone installed a Squishdot site with access restrictions? I've got the problem that as soon as I take away the "view" and "access contents information" permission from the anonymous user in my Squishdot site I cannot use the search interface anymore but only get KeyErrors (icon or thread_path depending on which permission I take away). I'm using Squishdot 0.7.2 and Zope 2.2.2. Any help appreciated! Ragnar