AttributeError: allDay

Traceback (innermost last):

File "Z:\main\chandler\Chandler.py", line 1, in ?
  #   Copyright (c) 2003-2006 Open Source Applications Foundation
File "Z:\main\chandler\Chandler.py", line 153, in ?
  main()
File "Z:\main\chandler\Chandler.py", line 77, in main
  realMain()
File "Z:\main\chandler\Chandler.py", line 73, in realMain
  app.MainLoop()
File "c:\cygwin\home\bryan\unshared\main\chandler\release\bin\Lib\site-packages\wx\_core.py", line 7180, in MainLoop
  wx.PyApp.MainLoop(self)
File "c:\cygwin\home\bryan\unshared\main\chandler\release\bin\Lib\site-packages\wx\_core.py", line 6610, in MainLoop
  return _core_.PyApp_MainLoop(*args, **kwargs)
File "c:\cygwin\home\bryan\unshared\main\chandler\release\bin\Lib\site-packages\wx\_core.py", line 12810, in <lambda>
  lambda event: event.callable(*event.args, **event.kw) )
File "c:\cygwin\home\bryan\unshared\main\chandler\release\bin\Lib\site-packages\wx\lib\buttons.py", line 213, in Notify
  self.GetEventHandler().ProcessEvent(evt)
File "c:\cygwin\home\bryan\unshared\main\chandler\release\bin\Lib\site-packages\wx\_core.py", line 3291, in ProcessEvent
  return _core_.EvtHandler_ProcessEvent(*args, **kwargs)
File "Z:\main\chandler\parcels\osaf\framework\blocks\ControlBlocks.py", line 129, in buttonPressed
  Block.post(event, {'item':self}, self)
File "Z:\main\chandler\parcels\osaf\framework\blocks\Block.py", line 188, in post
  hookItem.dispatchEvent (event, Block.depth)
File "Z:\main\chandler\parcels\osaf\framework\blocks\Block.py", line 1015, in dispatchEvent
  callMethod (block, methodName, event)
File "Z:\main\chandler\parcels\osaf\framework\blocks\Block.py", line 937, in callNamedMethod
  event.arguments ['results'] = member (blockOrWidget, event)
File "Z:\main\chandler\parcels\osaf\views\detail\detail.py", line 405, in onButtonPressedEvent
  item.StampKind(operation, mixinKind)
File "Z:\main\chandler\application\dialogs\RecurrenceDialog.py", line 329, in StampKind
  self.proxiedItem.StampKind(*args, **kwds)
File "Z:\main\chandler\parcels\osaf\pim\calendar\Calendar.py", line 524, in StampKind
  super(CalendarEventMixin, self).StampKind(operation, mixinKind)
File "Z:\main\chandler\parcels\osaf\pim\items.py", line 303, in StampKind
  self.itsKind = newKind
File "Z:\main\chandler\repository\item\Item.py", line 1707, in _setKind
  removeOrphans(self._values)
File "Z:\main\chandler\repository\item\Item.py", line 1705, in removeOrphans
  self.removeAttributeValue(name, attrDict)
File "Z:\main\chandler\repository\item\Item.py", line 555, in removeAttributeValue
  self._fireChanges('remove', name)
File "Z:\main\chandler\parcels\osaf\pim\calendar\Calendar.py", line 645, in onStartTimeChanged
  newStartTime = self.effectiveStartTime
File "Z:\main\chandler\parcels\osaf\pim\calendar\Calendar.py", line 600, in getEffectiveStartTime
  elif self.anyTime or self.allDay: