Thanks for the suggestion and explanation guys. Just to follow up, Michel's suggestion to use <dtml-with aq_explicit> to turn off acquisition did not work. Loren's suggestion to test on "hasProperty('nickname')" did the trick nicely. For completeness, here's the DTML for my current Breadcrumbs DTML method. -Barry -------------------- snip snip -------------------- <!-- start Breadcrumbs --> <dtml-call "REQUEST.set('rev', [])"> <dtml-in PARENTS skip_unauthorized> <dtml-let item=sequence-item> <dtml-call "rev.insert(0, item)"> </dtml-let> </dtml-in> <dtml-in rev> <dtml-with sequence-item> <a href="<dtml-var absolute_url>"> <dtml-if "hasProperty('nickname')"><dtml-var nickname><dtml-else><dtml-var title_or_id></dtml-if></a> </dtml-with> <dtml-unless sequence-end> > </dtml-unless> </dtml-in> <!-- end Breadcrumbs -->