Problems Running convert-ly

[Ted Stanion]

I had been using LilyPond 2.6.4-1 under cygwin. I decided to switch to 2.8.1
under Windows XP. I am trying to run convert.ly in a cygwin bash shell. I
started by adding <install-dir>/LilyPond/usr/bin to my PATH. When I try to run
convert-ly.py, however, I am getting the following messages:

Traceback (most recent call last):
  File "/cygdrive/c/nobackup/LilyPond/usr/bin/convert-ly.py", line 39, in ?
    import lilylib as ly
  File
"/cygdrive/c/nobackup/LilyPond/usr/share/lilypond/current/python/lilylib.py",
line 17, in ?
    import subprocess
  File "/usr/lib/python2.4/subprocess.py", line 391, in ?
    import select
ImportError: No such process

What am I doing wrong?

Thanks,
Ted