I'm working on upgrading our Zope 2.3.2/CMF 1.1beta/LoginManager based site to Zope 2.4.4/CMF1.2/exUserFolder (eventually Zope 2.6.1/CMF1.3, but I've been advised to do it version by version). Right now almost everything works on 2.4.4. All of the bits of the LoginManager user folder have be deleted, including ZPatterns, our ZClass based user object, etc. I've added exUserFolder, which seems to work correctly (all of the actual user data remains in a PostgreSQL database). But there's one odd problem... If I open a ZSQL method (any ZSQL method, new or old, inside the area that used to be controlled by LoginManager or not) it seems OK. Using the method works. But if I click on the Advanced tab in the ZMI, I get the following: Zope Error Zope has encountered an error while publishing this resource. Error Type: Could not load oid <gibberish> , pickled data in traceback info may contain clues Error Value: None ... Traceback (innermost last): File /var/local/control/V4/site/zope/lib/python/ZPublisher/Publish.py, line 223, in publish_module File /var/local/control/V4/site/zope/lib/python/ZPublisher/Publish.py, line 187, in publish File /var/local/control/V4/site/zope/lib/python/Zope/__init__.py, line 226, in zpublisher_exception_hook (Object: sqlTest) File /var/local/control/V4/site/zope/lib/python/ZPublisher/Publish.py, line 171, in publish File /var/local/control/V4/site/zope/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: manage_advancedForm) File /var/local/control/V4/site/zope/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: manage_advancedForm) File /var/local/control/V4/site/zope/lib/python/Shared/DC/Scripts/Bindings.py, line 324, in __call__ (Object: manage_advancedForm) File /var/local/control/V4/site/zope/lib/python/Shared/DC/Scripts/Bindings.py, line 354, in _bindAndExec (Object: manage_advancedForm) File /var/local/control/V4/site/zope/lib/python/App/special_dtml.py, line 244, in _exec (Object: manage_advancedForm) File /var/local/control/V4/site/zope/lib/python/Shared/DC/ZRDB/DA.py, line 548, in manage_product_zclass_info (Object: sqlTest) File /var/local/control/V4/site/zope/lib/python/ZODB/Connection.py, line 544, in setstate File /var/local/control/V4/site/zope/lib/python/ZODB/Connection.py, line 227, in _persistent_load (Info: ('\x00\x00\x00\x00\x00\x05*\xf6', '(cExtensionClass\nExtensionClass\nq\x01(U\x1eCComMember_PropertySheetsClassq\x02(cZClasses.ZClass\nPersistentClass\nq\x03cProducts.ZPatterns.PropertySheets\nVirtualSheets\nq\x04cZClasses.Property\nZInstanceSheets\nq\x05tq\x06}q\x07(U\x04iconq\x08U\x00U\n_p_changedq\tK\x01U\x07__doc__q\nU\x1aCComMember Property Sheetsq\x0bU\rsimple_topicsq\x0c(U\x08\x00\x00\x00\x00\x00.\xde\x02q\r(U\x11ZClasses.Propertyq\x0eU\x0eZInstanceSheetq\x0fttQU\x11__propset_attrs__q\x10(U\x11member_statisticsq\x11U\x07addressq\x12U\rsimple_topicsq\x13U\x15survey_qualificationsq\x14U\rsubscriptionsq\x15U\npromotionsq\x16tq\x17U\x07addressq\x18(U\x08\x00\x00\x00\x00\x00.\xde\x00q\x19(h\x0eU\x0eZInstanceSheetq\x1attQU\x06_p_oidq\x1bU\x08\x00\x00\x00\x00\x00\x05*\xf6q\x1cU\x15survey_qualificationsq\x1d(U\x08\x00\x00\x00\x00\x00p\xd1\x80q\x1e(h\x0eU\x0eZInstanceSheetq\x1fttQh\x15(U\x08\x00\x00\x00\x00\x00r%\xdfq (h\x0eU\x0eZInstanceSheetq!ttQU\t_p_serialq"U\x08\ x03C\x8d\x17\xda\x88MDq#U\x11member_statisticsq$(U\x08\x00\x00\x00\x00\x00\x13\x0b\xa7q%(h\x0eU\x0eZInstanceSheetq&ttQU\n__module__q\'Nh\x16(U\x08\x00\x00\x00\x00\x00r%\xe1q((h\x0eU\x0eZInstanceSheetq)ttQutq*t.N.')) Could not load oid <gibberish> pickled data in traceback info may contain clues: (see above) Obviously not all of the LoginManager stuff was correctly deleted. How can I get this junk out of the ZODB? Help, Dan Pierson