Traceback (most recent call last):
  File "./compizconfig-medium-settings", line 70, in ?
    window = MainWindow()
  File "./compizconfig-medium-settings", line 20, in __init__
    notebook = Notebook(self)
  File "./compizconfig-medium-settings", line 60, in __init__
    self.create(SwitchersPage)
  File "./compizconfig-medium-settings", line 66, in create
    instance = cls(self)
  File "/home/amphi/src/compiz-fusion/medium-settings/Pages.py", line 239, in __init__
    self.ring = SCombo(keycombos, Switcher('ring'))
  File "/home/amphi/src/compiz-fusion/medium-settings/Widgets.py", line 275, in __init__
    self.props.active = self.setting.value
TypeError: could not convert argument to correct param type