os.pipe() error in lilypond-book

[Trevor Daniels]

When I run lilypond-book with 2.13.26 I always get the
error messages below.  Lilypond-book with 2.13.14 does
not show this error on the same files.  I've not yet
tried any releases in between.  Does this os.pipe()
error ring any bells with anyone?  This is on Windows
Vista.

Trevor

Running lilypond-book
lilypond-book.py (GNU LilyPond) 2.13.26
Reading 
C:\Users\Trevor\LilyPond-git\Documentation\notation\pitches.itely...
Dissecting...
Writing snippets...Traceback (most recent call last):
 File "c:/program files/lilypond/usr/bin/lilypond-book.py", line 
694, in ?
   main ()
 File "c:/program files/lilypond/usr/bin/lilypond-book.py", line 
676, in main
   chunks = do_file (files[0])
 File "c:/program files/lilypond/usr/bin/lilypond-book.py", line 
570, in do_fil
e
   do_process_cmd (chunks, input_fullname, global_options)
 File "c:/program files/lilypond/usr/bin/lilypond-book.py", line 
435, in do_pro
cess_cmd
   snippet.write_ly()
 File "c:\program 
files\lilypond\usr\share\lilypond\current\python\book_snippet
s.py", line 600, in write_ly
   diff_against_existing = self.filter_pipe (self.full_ly (), 
'diff -u %s -' %
filename)
 File "c:\program 
files\lilypond\usr\share\lilypond\current\python\book_snippet
s.py", line 721, in filter_pipe
   p = Popen(cmd, shell=True, stdin=PIPE, stdout=PIPE, stderr=PIPE, 
close_fds=T
rue)
 File "c:\Program Files\LilyPond\usr\lib\python2.4\subprocess.py", 
line 534, in
__init__
   (p2cread, p2cwrite,
 File "c:\Program Files\LilyPond\usr\lib\python2.4\subprocess.py", 
line 825, in
_get_handles
   p2cread, p2cwrite = os.pipe()
AttributeError: 'module' object has no attribute 'pipe'
Lilypond-book returned code 1