Missing DistutilsOptionError import in distutil2.config causes the following error:

Traceback (most recent call last):
  File "/opt/OpenPython-2.7.1/lib/python2.7/runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/opt/OpenPython-2.7.1/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/opt/OpenPython-2.7.1/lib/python2.7/site-packages/Distutils2-1.0a3-py2.7.egg/distutils2/run.py", line 181, in <module>
    main()
  File "/opt/OpenPython-2.7.1/lib/python2.7/site-packages/Distutils2-1.0a3-py2.7.egg/distutils2/run.py", line 176, in main
    return commands_main()
  File "/opt/OpenPython-2.7.1/lib/python2.7/site-packages/Distutils2-1.0a3-py2.7.egg/distutils2/run.py", line 90, in commands_main
    dist.parse_config_files()
  File "/opt/OpenPython-2.7.1/lib/python2.7/site-packages/Distutils2-1.0a3-py2.7.egg/distutils2/dist.py", line 307, in parse_config_files
    return self.config.parse_config_files(filenames)
  File "/opt/OpenPython-2.7.1/lib/python2.7/site-packages/Distutils2-1.0a3-py2.7.egg/distutils2/config.py", line 193, in parse_config_files
    self._read_setup_cfg(parser)
  File "/opt/OpenPython-2.7.1/lib/python2.7/site-packages/Distutils2-1.0a3-py2.7.egg/distutils2/config.py", line 113, in _read_setup_cfg
    raise DistutilsOptionError(msg)
NameError: global name 'DistutilsOptionError' is not defined