[Zope] Zope 2.5.0b3 and sessioning problems

[Juan Carlos Coruña]

Hello all,

I have some problems using the Session Data Manager in Zope 2.5.0b3.
Sometimes I become a Unpack error. Here is the traceback:

Traceback:
   Traceback (innermost last):
  File /home/zope/Zope-2.5.0b3-linux2-x86/lib/python/ZPublisher/Publish.py,
line 103, in publish
  File /home/zope/Zope-2.5.0b3-linux2-x86/lib/python/Zope/__init__.py, line
172, in commit
  File /home/zope/Zope-2.5.0b3-linux2-x86/lib/python/ZODB/Transaction.py,
line 233, in commit
  File /home/zope/Zope-2.5.0b3-linux2-x86/lib/python/ZODB/Connection.py,
line 347, in commit
    (Info: (('BTrees.OOBTree', 'OOBucket'), '\x00\x00\x00\x00\x00\x00\x00*',
''))
  File
/home/zope/Zope-2.5.0b3-linux2-x86/lib/python/Products/TemporaryFolder/Tempo
raryStorage.py, line 125, in store
    (Object: TemporaryStorage)
  File
/home/zope/Zope-2.5.0b3-linux2-x86/lib/python/ZODB/ConflictResolution.py,
line 104, in tryToResolveConflict
    (Object: TemporaryStorage)
  File
/home/zope/Zope-2.5.0b3-linux2-x86/lib/python/ZODB/ConflictResolution.py,
line 36, in state
    (Object: TemporaryStorage)
  File
/home/zope/Zope-2.5.0b3-linux2-x86/lib/python/Products/TemporaryFolder/Tempo
raryStorage.py, line 106, in loadSerial
    (Object: TemporaryStorage)
ValueError: unpack list of wrong size

What is the problem?