hey there, I've experienced a couple of times the following problem: 1. Install someProduct and restart zope 2. Create an empty folder /foo 3. Create an instance fo someProduct as /foo/bar 4. Delete /foo/bar 5. Uninstall someProduct and restart zope 6. Go to /foo and I get an error about someProduct not being found. the most recent product I've tried where this occurs is exUserFolder. you can follow the steps 1,2,3&4 and export folder /foo as XML and you will see a lot of references to exUserFolder remain there (and nope, it's not because the zodb hasn't been packed)...something weird goes on there. But I remember this happening before with some other products too (I cant recall which though) are there any destructors or anything at all that should be created so this wont happen ? Thanks alex