File "Chandler.py", line 18, in <module>
    """
  File "Chandler.py", line 23, in main
    def main():
  File "Chandler.py", line 86, in realMain
    app.MainLoop()
  File "C:\src\ide\bin\2.5\src/debug/tserver\_wxhooks.pyc", line 137, in __MainLoopWrapper
  File "c:\work\osaf\chandler\release\bin\lib\site-packages\wx\_core.py", line 7917, in MainLoop
    wx.PyApp.MainLoop(self)
  File "c:\work\osaf\chandler\release\bin\lib\site-packages\wx\_core.py", line 7223, in MainLoop
    return _core_.PyApp_MainLoop(*args, **kwargs)
  File "c:\work\osaf\chandler\application\Application.py", line 846, in OnCommand
    Block.post (blockEvent, arguments, block)
  File "c:\work\osaf\chandler\parcels\osaf\framework\blocks\Block.py", line 180, in post
    hookItem.dispatchEvent (event, Block.depth)
  File "c:\work\osaf\chandler\parcels\osaf\framework\blocks\Block.py", line 954, in dispatchEvent
    callNamedMethod (block, methodName, event)
  File "c:\work\osaf\chandler\parcels\osaf\framework\blocks\Block.py", line 873, in callNamedMethod
    event.arguments ['results'] = member (blockOrWidget, event)
  File "c:\work\osaf\chandler\parcels\osaf\views\main\Main.py", line 465, in onCommitViewEvent
    self.RepositoryCommitWithStatus()
  File "c:\work\osaf\chandler\parcels\osaf\views\main\Main.py", line 601, in RepositoryCommitWithStatus
    self.itsView.commit()
  File "c:\work\osaf\chandler\repository\persistence\DBRepositoryView.py", line 670, in commit
    self.effectDelete()
  File "c:\work\osaf\chandler\repository\item\Item.py", line 1520, in _effectDelete
    delattr(self, name)
  File "c:\work\osaf\chandler\repository\item\Item.py", line 519, in removeAttributeValue
    _attrDict._removeValue(name, value, otherName)
  File "c:\work\osaf\chandler\repository\item\Values.py", line 531, in _removeValue
    otherKey = self._removeRef(name, other, dictKey)
  File "c:\work\osaf\chandler\repository\item\Values.py", line 549, in _removeRef
    other.clear()
  File "c:\work\osaf\chandler\repository\item\RefCollections.py", line 304, in clear
    self.remove(other)
  File "c:\work\osaf\chandler\repository\item\RefCollections.py", line 439, in remove
    self._otherName, self._dictKey)
  File "c:\work\osaf\chandler\repository\item\Values.py", line 534, in _removeValue
    other.itsRefs._removeRef(otherName, item, otherKey)
  File "c:\work\osaf\chandler\repository\item\Values.py", line 569, in _removeRef
    return value._removeRef(other, dictKey)
  File "c:\work\osaf\chandler\repository\item\Sets.py", line 574, in _removeRef
    self._owner().remove(other)
  File "c:\work\osaf\chandler\parcels\osaf\pim\collections.py", line 844, in remove
    self.exclusions.add(item)
  File "c:\work\osaf\chandler\repository\item\RefCollections.py", line 249, in add
    self.append(item, alias, otherKey)
  File "c:\work\osaf\chandler\repository\item\RefCollections.py", line 272, in append
    if item in self: