Dear Pymol developers,

I have recently installed pymol 1.6.x in MAC OS X 10.8.2 and have the following error while opening the GUI

Traceback (most recent call last):
  File "/Library/Python/2.7/site-packages/pmg_tk/", line 35, in run
  File "/Library/Python/2.7/site-packages/pmg_tk/", line 325, in __init__
  File "/Library/Python/2.7/site-packages/pmg_tk/", line 251, in runSkin
  File "/Library/Python/2.7/site-packages/pmg_tk/skins/normal/", line 3661, in setup
  File "/Library/Python/2.7/site-packages/pmg_tk/skins/normal/", line 3634, in createInterface
    self.balloon = Pmw.Balloon(self.root)
  File "/Library/Python/2.7/site-packages/Pmw/Pmw_2_0_0/lib/", line 28, in __init__
    Pmw.MegaToplevel.__init__(self, parent)
  File "/Library/Python/2.7/site-packages/Pmw/Pmw_2_0_0/lib/", line 982, in __init__
    super().__init__(parent, tkinter.Toplevel)
TypeError: super() takes at least 1 argument (0 given)

As a result it never opens the "The Pymol Molecular Graphics System" window. Can anyone help to find out what might be wrong. 


Rhitankar Pal
Postdoctoral Researcher,
Dept of Chemistry, Yale University
New Haven, CT 06511