Upgraded to Zope 2.8.1 on Fedora Core 2, compiled with Python 2.3.5 (sitting alongside in the paralell to the system python). Zope started, but with errors. Reverted back to my former stable Zope 2.7.7 and Python 2.3.3, but Zope will not start at all now. Running the debugger reveals this. Any suggestions as to how to recover. I am at a total loss. export EVENT_LOG_FILE EVENT_LOG_FILE= /var/zope-instance/bin/runzope Traceback (most recent call last): File "/var/zope277/lib/python/Zope/Startup/run.py", line 50, in ? run() File "/var/zope277/lib/python/Zope/Startup/run.py", line 19, in run start_zope(opts.configroot) File "/var/zope277/lib/python/Zope/Startup/__init__.py", line 52, in start_zope starter.startZope() File "/var/zope277/lib/python/Zope/Startup/__init__.py", line 231, in startZope Zope.startup() File "/var/zope277/lib/python/Zope/__init__.py", line 47, in startup _startup() File "/var/zope277/lib/python/Zope/App/startup.py", line 96, in startup OFS.Application.initialize(application) File "/var/zope277/lib/python/OFS/Application.py", line 278, in initialize initializer.initialize() File "/var/zope277/lib/python/OFS/Application.py", line 303, in initialize self.install_inituser() File "/var/zope277/lib/python/OFS/Application.py", line 484, in install_inituser app.acl_users._createInitialUser() File "/var/zope277/lib/python/AccessControl/User.py", line 1075, in _createInitialUser if len(self.data) <= 1: File "/usr/lib/python2.3/UserDict.py", line 18, in __len__ def __len__(self): return len(self.data) File "/var/zope277/lib/python/ZODB/Connection.py", line 600, in setstate self._set_ghost_state(obj, p) File "/var/zope277/lib/python/ZODB/Connection.py", line 638, in _set_ghost_state unpickler.load() ImportError: No module named mapping -- Harlow Pinson Indepth Learning Email: hpinson@indepthl.com Phone: 505 994-2135 Fax: 505 994-3603