[Pythonmac-SIG] need help installing py2app

[Francis Young]

Hi there, 

Traceback (most recent call last):
  File "setup.py", line 106, in <module>
    **extra_args
  File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/distutils/core.py", line 112, in setup
    _setup_distribution = dist = klass(attrs)
  File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/distribute-0.6.4-py2.5.egg/setuptools/dist.py", line 224, in __init__
    _Distribution.__init__(self,attrs)
  File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/distutils/dist.py", line 267, in __init__
    self.finalize_options()
  File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/distribute-0.6.4-py2.5.egg/setuptools/dist.py", line 257, in finalize_options
    ep.load()(self, ep.name, value)
  File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/distribute-0.6.4-py2.5.egg/pkg_resources.py", line 1922, in load
    raise ImportError("%r has no %r attribute" % (entry,attr))
ImportError: <module 'setuptools.dist' from '/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/distribute-0.6.4-py2.5.egg/setuptools/dist.pyc'> has no 'check_packages' attribute
Francis-Youngs-iMac:py2app-0.5.2 FrancisYoung$ 

This is the error message i got and being new to python programming i don't understand how to work around this problem. Could someone please help?