I'm building a Product in Python and seem to be having some issues with the new registerClass method of Product registering. If I build it all fine as noted in Shane's recent HowTo, the product does not show up in the control panel. Then after much other chasing, I make a purposeful syntax error in the code, and the Product shows up to reflect its brokenness and shows me the syntax error. Then when I try to fix the error, and do a restart, the error still shows as if I had not changed the code. I checked _many, many_ times, and now the code is different, but Zope seems not to recognize the changed code in spite of my deletion of the pyc files. TYA, Tim