Hi, I uninstalled some ZClass-based products while migrating a Zope instance from 2.3.2 to 2.4.0, however, I get the following disturbing log entries: ------ 2001-08-03T13:22:59 INFO(0) Zope A broken ZClass dependency was found in the global class registry. This is probably due to a product being uninstalled. The registry has successfully been rebuilt. ------ 2001-08-03T13:22:59 ERROR(200) Zope A problem was found in the global product registry but the attempt to rebuild the registry failed. Traceback (innermost last): File /usr/local/zope/2.4.0_base/lib/python/OFS/Application.py, line 472, in initialize (Object: ApplicationDefaultPermissions) File /usr/local/zope/2.4.0_base/lib/python/ZODB/Transaction.py, line 302, in commit File /usr/local/zope/2.4.0_base/lib/python/ZODB/Connection.py, line 420, in commit (Info: (('BTree', 'BTree'), '\x00\x00\x00\x00\x00\x85\r\xf4', '')) File /usr/local/zope/2.4.0_base/lib/python/ZODB/FileStorage.py, line 663, in store (Object: Data.fs) ConflictError: ('\x00\x00\x00\x00\x00\x00\x00\x00', '\x03>9\xad\xb73\x9cU') What does this mean? Why is it happening? what should I do? cheers, Chris