Reoccuring crash

a.py

[WARNING           ] [WinPygame   ] Video: failed (multisamples=2)
[WARNING           ] [WinPygame   ] trying without antialiasing
[INFO              ] [Base        ] Leaving application in progress...
 Traceback (most recent call last):
   File "C:\Kivy\nstar\recent version\merger.py", line 27, in <module>
     execfile('northernstar.py')
   File "northernstar.py", line 1946, in <module>
     MainApp().run()
   File "C:\Kivy\kivy\kivy\app.py", line 779, in run
     runTouchApp()
   File "C:\Kivy\kivy\kivy\base.py", line 474, in runTouchApp
     EventLoop.window.mainloop()
   File "C:\Kivy\kivy\kivy\core\window\window_pygame.py", line 381, in mainloop
     self._mainloop()
   File "C:\Kivy\kivy\kivy\core\window\window_pygame.py", line 287, in _mainloop

     EventLoop.idle()
   File "C:\Kivy\kivy\kivy\base.py", line 314, in idle
     Clock.tick()
   File "C:\Kivy\kivy\kivy\clock.py", line 422, in tick
     self._process_events()
   File "C:\Kivy\kivy\kivy\clock.py", line 537, in _process_events
     if event.tick(self._last_tick) is False:
   File "C:\Kivy\kivy\kivy\clock.py", line 309, in tick
     ret = callback(self._dt)
   File "C:\Kivy\kivy\kivy\core\window\window_pygame.py", line 140, in create_wi
ndow
     raise CoreCriticalException(e.message)
 kivy.core.CoreCriticalException: Unable to create GL context
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