I keep getting the following error when I click on the check box in the listctrl. Any help would be much appreciated.

Traceback (most recent call last):
File "C:\Python27\lib\site-packages\ObjectListView\ObjectListView.py", line 1646, in _HandleLeftDown
self._HandleLeftDownOnImage(row, subitem)
File "C:\Python27\lib\site-packages\ObjectListView\ObjectListView.py", line 1660, in _HandleLeftDownOnImage
column.SetCheckState(modelObject, not column.GetCheckState(modelObject))
File "C:\Python27\lib\site-packages\ObjectListView\ObjectListView.py", line 3892, in SetCheckState
return self._SetValueUsingMunger(modelObject, state, self.checkStateSetter, True)
File "C:\Python27\lib\site-packages\ObjectListView\ObjectListView.py", line 3745, in _SetValueUsingMunger
munger(modelObject, value)
File "C:\Python27\lib\site-packages\ObjectListView\ObjectListView.py", line 455, in _handleSetCheckState
checkState[modelObject] = newValue
TypeError: unhashable type: 'dict'