setup.py install fails on Mac/Windows

[Brian Curtin]

Running "python setup.py install" fails on Windows with the following traceback:

Traceback (most recent call last):
  File "setup.py", line 352, in <module>
    **extra)
  File "c:\u1-new\eggs\python_distutils_extra-2.31-py2.7.egg\DistUtilsExtra\auto.py", line 98, in setup
    distutils.core.setup(**attrs)
  File "C:\Python27\lib\distutils\core.py", line 152, in setup
    dist.run_commands()
  File "C:\Python27\lib\distutils\dist.py", line 953, in run_commands
    self.run_command(cmd)
  File "C:\Python27\lib\distutils\dist.py", line 972, in run_command
    cmd_obj.run()
  File "setup.py", line 90, in run
    prefix = self.install_data.replace(self.root, '')
TypeError: expected a character buffer object

self.root in that replace call is None.