Plone 4.1rc3 installation fails on Mac OS X Lion

Namaste, all.

I am trying to install Plone 4.1rc3 on Mac OS X Lion build 11A494a, with Python 2.7 installed. I've tried the DMG installer and the Unified Installer and both error out. The latter's log file contains the following (which I believe is the pertinent, applicable part):

gcc -I"/Users/benjamin/Plone/Python-2.6"/include -L"/Users/benjamin/Plone/Python-2.6"/lib -R"/Users/benjamin/Plone/Python-2.6"/lib  -o python.exe \
            Modules/python.o \
            libpython2.6.a -ldl  -framework CoreFoundation     
Undefined symbols for architecture x86_64:
  "_Py_Main", referenced from:
      _main in python.o
ld: symbol(s) 开发者_如何转开发not found for architecture x86_64
collect2: ld returned 1 exit status
make: *** [python.exe] Error 1

This is my first time using Python and Plone in any capacity, so I am likely overlooking something elementary. Any help would be appreciated.

Try this again. Unified Installer is working on Lion release with Xcode 3 and/or 4 installed.