Argh. Grrr. Gnash. Wail. It works fine now. In fact, I probably "fixed" it within the first fifteen minutes. Then I made the mistake of assuming that Zope would re-load the broken Product from scratch the next time it started, and was mystified when my fix didn't take. The traceback screen for broken products needs the following at the top: <H1><strong><blink> Once you fix the bug reported below, DELETE THIS PRODUCT, and restart Zope. </blink></strong></H1> oh-the-pain-ly y'rs Evan Simpson