Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/glchess/config.py", line 179, in _watch
    function(name, value)
  File "/usr/lib/pymodules/python2.7/glchess/display.py", line 361, in __onPiecesStyleChanged
    self.updatePiecesStyle()
  File "/usr/lib/pymodules/python2.7/glchess/display.py", line 429, in updatePiecesStyle
    self.scene.controller.setPiecesStyle(piecesStyle)
AttributeError: Scene instance has no attribute 'setPiecesStyle'