Comment 2 for bug 747235

Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/ubuntutweak/mainwindow.py", line 393, in setup_notebook
    page = module()
  File "/usr/lib/pymodules/python2.7/ubuntutweak/modules/compiz.py", line 230, in __init__
    self.create_interface()
  File "/usr/lib/pymodules/python2.7/ubuntutweak/modules/compiz.py", line 248, in create_interface
    hbox.pack_start(self.create_edge_setting(), True, False, 0)
  File "/usr/lib/pymodules/python2.7/ubuntutweak/modules/compiz.py", line 363, in create_edge_setting
    combobox = self.create_edge_combo_box("TopLeft")
  File "/usr/lib/pymodules/python2.7/ubuntutweak/modules/compiz.py", line 340, in create_edge_combo_box
    setting = plugin.Display[v]
AttributeError: 'compizconfig.Plugin' object has no attribute 'Display'