convert-ly on macosx 10.4

[James E. Bailey]

I just noticed that convert-ly does not work from the lilypond.app  
menu item in osx 10.4. I have python installed. convert-ly works from  
the terminal, but here are the problems with the menu item.

• If I update the convert-ly file to be: env python, lilypond does  
not find python. That's not unreasonable, the GUI versions of most  
command-line applications don't load the path properly. (It's a known  
issue with programs like Emacs.app or Aquamacs.app)
• If I update the convert-ly file to be the exact path to my python  
installation (in this case /Users/jamesebailey/bin/python), lilypond  
finds python, but reports the error:
 'import site' failed; use -v for traceback
Traceback (most recent call last):
  File "/Users/jamesebailey/Applications/LilyPond.app/Contents/ 
Resources/bin/convert-ly", line 14, in <module>
    import os
ImportError: No module named os

With either modification, running convert-ly from the terminal works  
without problem. Can this be resolved, or should convert-ly simply be  
removed from the menu in 10.4?