Hello, Actually I suppose it's Python that's dumping core. The following query causes a core dump: <dtml-with history> <dtml-with 2000> <dtml-in "objectValues(['DTML Document'])" size=3 sort=id reverse> <dtml-var sequence-item><br> </dtml-in> </dtml-with> </dtml-with> The following query works as expected: <dtml-with history> <dtml-with 2000> <dtml-in "objectValues(['DTML Document'])" size=3 sort=title reverse> <dtml-var sequence-item><br> </dtml-in> </dtml-with> </dtml-with> Any idea why? I'm using 2.1.6. The other day I posted a question asking why my bobobase_modification_time was off by 1 day. I got no answer. But upgrading from 2.1.4 to 2.1.6 seems to have fixed that issue. The core dump happened in 2.1.4, so I upgraded to 2.1.6, but the core dump issue remains. thanks, Luke