[Zope] ZEO manageUndo not working - DisconnectedError

[Sebastian Tänzer]

Hello once more,

I’m running a fresh Zope2 ZEO setup (pip install --index-url=http://download.zope.org/Zope2/index/2.13.22/ Zope2 and pip install zope.mkzeoinstance) inside a virtualenv setup.

As said: No products, fresh setup, happens with any object. Going to any undo tab produces this error: Error Type: DisconnectedError

Client log:

2015-05-06 01:16:46 INFO ZEO.ClientStorage zeostorage Disconnected from storage: "('localhost', 9999)"
2015-05-06 01:16:46 ERROR Zope.SiteErrorLog 1430867806.070.275579780745 http://192.168.10.38:8080/temp_folder/manage_UndoForm
Traceback (innermost last):
  Module ZPublisher.Publish, line 138, in publish
  Module ZPublisher.mapply, line 77, in mapply
  Module ZPublisher.Publish, line 48, in call_object
  Module Shared.DC.Scripts.Bindings, line 322, in __call__
  Module Shared.DC.Scripts.Bindings, line 359, in _bindAndExec
  Module App.special_dtml, line 185, in _exec
  Module App.Undo, line 112, in undoable_transactions
  Module ZODB.DB, line 901, in undoInfo
  Module ZEO.ClientStorage, line 1283, in undoInfo
  Module ZEO.ServerStub, line 285, in undoInfo
  Module ZEO.zrpc.connection, line 776, in call
  Module ZEO.zrpc.connection, line 796, in wait
DisconnectedError
2015-05-06 01:16:46 WARNING ZEO.zrpc (19205) CW: error connecting to ('::1', 9999): ECONNREFUSED
2015-05-06 01:16:46 INFO ZEO.ClientStorage zeostorage Testing connection <ManagedClientConnection ('127.0.0.1', 9999)>
2015-05-06 01:16:46 INFO ZEO.zrpc.Connection('C') (127.0.0.1:9999) received handshake ‚Z3101'

ZEO server log:

2015-05-06T01:15:13 INFO ZEO.zrpc.Connection('S') (127.0.0.1:47063) received handshake 'Z3101'
------
2015-05-06T01:16:46 ERROR ZEO.zrpc (19082) can't decode message: '(K\x9dI00\nU\x08undoInfo(K\x00K\x14}U\x0bdescriptioncco...'
------
2015-05-06T01:16:46 ERROR ZEO.zrpc.Connection('S') (127.0.0.1:47063) Error caught in asyncore
Traceback (most recent call last):
  File "/opt/python/2.7.9/lib/python2.7/asyncore.py", line 83, in read
    obj.handle_read_event()
  File "/opt/python/2.7.9/lib/python2.7/asyncore.py", line 449, in handle_read_event
    self.handle_read()
  File "/opt/python/zope2-latest/lib/python2.7/site-packages/ZEO/zrpc/smac.py", line 240, in handle_read
    self.message_input(msg)
  File "/opt/python/zope2-latest/lib/python2.7/site-packages/ZEO/zrpc/connection.py", line 417, in message_input
    msgid, async, name, args = self.decode(message)
  File "/opt/python/zope2-latest/lib/python2.7/site-packages/ZEO/zrpc/marshal.py", line 80, in server_decode
    return unpickler.load() # msgid, flags, name, args
  File "/opt/python/zope2-latest/lib/python2.7/site-packages/ZEO/zrpc/marshal.py", line 120, in server_find_global
    raise ZRPCError("import error %s: %s" % (module, msg))
ZRPCError: import error copy_reg:
------
2015-05-06T01:16:46 INFO ZEO.StorageServer (127.0.0.1:47063) disconnected

The path difference in /opt/python/2.7.9/lib/python2.7/asyncore.py vs /opt/python/zope2-latest/lib/python2.7/site-packages make me wonder if this is a bug or a problem with my setup?

Client + ZEO server were created from the same virtualenv.

Python 2.7.9 build from source.

Any ideas?

Best, Sebastian