Hello All, I'm trying to upgrade a Zope 2.0.1 site to 2.1.2. I used http://www.zope.org/Members/mcdonc/HowTos/zopeinstall/ZOPE-INSTALL-HOWTO <http://www.zope.org/Members/mcdonc/HowTos/zopeinstall/ZOPE-INSTALL-HOWTO> as a reference guide. Everything seems to have worked fine except for a Z class that I had previously created. I created a new product as described in http://www.zope.org/Members/lstaffor/zProperties <http://www.zope.org/Members/lstaffor/zProperties> After performing the upgrade, the product is no longer functional. As an alternate route, I tried exporting the product to a .zexp file. That worked fine, but I was then unable to import the file into the new Zope instance. Is there an upgrade path for Z Classes that I am as yet unaware of? I still consider myself a newbie. Any ideas? Thanks in advance for any help provided. -Mark