I have a ZClass with a DTML method called "title" which computes a title for an instance based on the value of another property. Almost everything seems to work fine...I can use the title attribute in my standard_html_header, the computed title shows up correctly on the management screen. But calling title_or_id on one of these instances raises a KeyError. Is this expected behavior or a bug? Zope 2.3.0 on Linux. thanks, -- Tim Moore