Windows install problems with python 2.7.3

[pythonmobile]

Command python setup.py egg_info failed with error code 1 in C:...\pyev

Exception information:
Traceback (most recent call last):
File "C:\Python27\lib\site-packages\pip-1.1-py2.7.egg\pip\basecommand.py", line 104, in main
status = self.run(options, args)
File "C:\Python27\lib\site-packages\pip-1.1-py2.7.egg\pip\commands\install.py", line 245, in run
requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
File "C:\Python27\lib\site-packages\pip-1.1-py2.7.egg\pip\req.py", line 1009, in prepare_files
req_to_install.run_egg_info()
File "C:\Python27\lib\site-packages\pip-1.1-py2.7.egg\pip\req.py", line 225, in run_egg_info
command_desc='python setup.py egg_info')
File "C:\Python27\lib\site-packages\pip-1.1-py2.7.egg\pip__init__.py", line 256, in call_subproce
ss
% (command_desc, proc.returncode, cwd))
InstallationError: Command python setup.py egg_info failed with error code 1 in C:...\pyev