[Distutils] distutils.core.setup --install-script option in Python 2.6 ?

Hello, I have just upgraded from Python 2.5 to 2.6.4 (MS Windows XP service pack 3). My setup.py scripts (based on distutils.core.setup) no longer work with the --install-script option. Here is the error: * error: option --install-script not recognized The above error occurs when passing either bdist_wininst or bdist_msi parameters to the setup.py scripts. I have been unable to locate any on-line mention of this option not being supported. I apologize for missing something obvious here, but I am stuck. Thanks in advance for your feedback. -- jv