Hello,

after importing a product from zope 2.6.4 to a 2.10.3 instance, trying
to open the product produces quite a lot of errors in my event.log, and
a traceback in the zope management interface.

I found a lot of mails regarding plone upgrades which report a similar
RuntimeError. What exactly does this mean?

this is what i get in event.log:

------
2007-07-12T00:47:24 ERROR ZODB.Connection Couldn't load state for 0x0aa5
Traceback (most recent call last):
  File "/usr/lib/zope2.10/lib/python/ZODB/Connection.py", line 749, in setstate
    self._setstate(obj)
  File "/usr/lib/zope2.10/lib/python/ZODB/Connection.py", line 807, in _setstate
    self._reader.setGhostState(obj, p)
  File "/usr/lib/zope2.10/lib/python/ZODB/serialize.py", line 604, in 
setGhostState
    state = self.getState(pickle)
  File "/usr/lib/zope2.10/lib/python/ZODB/serialize.py", line 597, in getState
    return unpickler.load()
  File "/usr/lib/zope2.10/lib/python/ZODB/serialize.py", line 471, in 
_persistent_load
    return self.load_oid(reference)
  File "/usr/lib/zope2.10/lib/python/ZODB/serialize.py", line 537, in load_oid
    return self._conn.get(oid)
  File "/usr/lib/zope2.10/lib/python/ZODB/Connection.py", line 208, in get
    obj._p_jar = self
  File "/usr/lib/zope2.10/lib/python/ZClasses/_pmc.py", line 65, in __setattr__
    super(ZClassPersistentMetaClass, self).__setattr__(name, v)
  File "/usr/lib/zope2.10/lib/python/ZODB/persistentclass.py", line 84, in 
__set__
    jar.setstate(inst)
  File "/usr/lib/zope2.10/lib/python/ZODB/Connection.py", line 754, in setstate
    exc_info=sys.exc_info())
  File "logging/__init__.py", line 999, in error
  File "logging/__init__.py", line 1078, in _log
  File "logging/__init__.py", line 1064, in makeRecord
  File "logging/__init__.py", line 246, in __init__
    def setupConfiguredLoggers(self):
  File "threading.py", line 677, in currentThread
    return _DummyThread()
RuntimeError: maximum recursion depth exceeded
------

[ hundredthousands of lines with similar tracebacks, which become longer and 
longer ]

------
2007-07-12T00:47:26 ERROR Zope.SiteErrorLog 
https://sandbox.kicms.de/Control_Panel/Products/BasicCMS/manage_main
Traceback (innermost last):
  Module ZPublisher.Publish, line 119, in publish
  Module ZPublisher.mapply, line 88, in mapply
  Module ZPublisher.Publish, line 42, in call_object
  Module Shared.DC.Scripts.Bindings, line 313, in __call__
  Module Shared.DC.Scripts.Bindings, line 350, in _bindAndExec
  Module App.special_dtml, line 178, in _exec
  Module DocumentTemplate.DT_Let, line 76, in render
  Module DocumentTemplate.DT_In, line 643, in renderwob
  Module DocumentTemplate.DT_In, line 771, in sort_sequence
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
  Module ZODB.serialize, line 604, in setGhostState
  Module ZODB.serialize, line 597, in getState
  Module ZODB.serialize, line 471, in _persistent_load
  Module ZODB.serialize, line 537, in load_oid
  Module ZODB.Connection, line 208, in get
  Module ZClasses._pmc, line 65, in __setattr__
  Module ZODB.persistentclass, line 84, in __set__
  Module ZODB.Connection, line 749, in setstate
  Module ZODB.Connection, line 807, in _setstate
RuntimeError: maximum recursion depth exceeded

greetings,
 jonas

-- 
"In post-historical society, the rulers have ceased to rule,
                but the slaves remain slaves." - Perry Anderson
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