Traceback (most recent call last):
  File "sandbox.py", line 318, in <module>
    main()
  File "sandbox.py", line 311, in main
    director.run(Scene(SandboxMapMenu()))
  File "/usr/local/lib/python2.7/dist-packages/cocos2d-0.5.5-py2.7.egg/cocos/director.py", line 373, in run
    event_loop.run()
  File "/usr/local/lib/python2.7/dist-packages/pyglet/app/base.py", line 135, in run
    self._run_estimated()
  File "/usr/local/lib/python2.7/dist-packages/pyglet/app/base.py", line 164, in _run_estimated
    timeout = self.idle()
  File "/usr/local/lib/python2.7/dist-packages/pyglet/app/base.py", line 279, in idle
    window.dispatch_event('on_draw')
  File "/usr/local/lib/python2.7/dist-packages/pyglet/window/__init__.py", line 1151, in dispatch_event
    if EventDispatcher.dispatch_event(self, *args) != False:
  File "/usr/local/lib/python2.7/dist-packages/pyglet/event.py", line 355, in dispatch_event
    if handler(*args):
  File "/usr/local/lib/python2.7/dist-packages/cocos2d-0.5.5-py2.7.egg/cocos/director.py", line 431, in on_draw
    self.scene.visit()
  File "/usr/local/lib/python2.7/dist-packages/cocos2d-0.5.5-py2.7.egg/cocos/cocosnode.py", line 653, in visit
    c.visit()
  File "/usr/local/lib/python2.7/dist-packages/cocos2d-0.5.5-py2.7.egg/cocos/cocosnode.py", line 653, in visit
    c.visit()
  File "/usr/local/lib/python2.7/dist-packages/cocos2d-0.5.5-py2.7.egg/cocos/cocosnode.py", line 653, in visit
    c.visit()
  File "/usr/local/lib/python2.7/dist-packages/cocos2d-0.5.5-py2.7.egg/cocos/cocosnode.py", line 646, in visit
    self.draw()
  File "/usr/local/lib/python2.7/dist-packages/cocos2d-0.5.5-py2.7.egg/cocos/layer/util_layers.py", line 112, in draw
    self._batch.draw()
  File "/usr/local/lib/python2.7/dist-packages/pyglet/graphics/__init__.py", line 544, in draw
    func()
  File "/usr/local/lib/python2.7/dist-packages/pyglet/graphics/__init__.py", line 476, in <lambda>
    (lambda d, m: lambda: d.draw(m))(domain, mode))
  File "/usr/local/lib/python2.7/dist-packages/pyglet/graphics/vertexdomain.py", line 297, in draw
    buffer.bind()
  File "/usr/local/lib/python2.7/dist-packages/pyglet/graphics/vertexbuffer.py", line 397, in bind
    self.data_ptr + self._dirty_min)
  File "/usr/local/lib/python2.7/dist-packages/pyglet/gl/lib.py", line 105, in errcheck
    raise GLException(msg)
pyglet.gl.lib.GLException: invalid operation