vc-bzr failed in Windows XP

[Leo]

Hi There6,

I am running Emacs on Windows XP downloaded from
http://ourcomments.org/Emacs/EmacsW32.html. The version is GNU Emacs
23.0.60.1 (i386-mingw-nt5.1.2600) of 2008-06-29 on LENNART-69DE564.

sha1sum.exe downloaded from
ftp://ftp.gnupg.org/gcrypt/binary/sha1sum.exe.

Now when I try to open a file in bzr repo and type C-x v =, Emacs throws
the following backtrace:

Debugger entered--Lisp error: (args-out-of-range 1 41)
  buffer-substring(1 41)
  (let ((prog sha1-program) (args nil)) (when (consp prog) (setq args ...) 
(setq prog ...)) (apply (quote process-file) prog (file-relative-name file) t 
nil args) (buffer-substring (point-min) (+ ... 40)))
  (progn (set-buffer-multibyte nil) (let (... ...) (when ... ... ...) (apply 
... prog ... t nil args) (buffer-substring ... ...)))
  (unwind-protect (progn (set-buffer-multibyte nil) (let ... ... ... ...)) (and 
(buffer-name temp-buffer) (kill-buffer temp-buffer)))
  (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn ... ...) 
(and ... ...)))
  (with-current-buffer temp-buffer (unwind-protect (progn ... ...) (and ... 
...)))
  (let ((temp-buffer ...)) (with-current-buffer temp-buffer (unwind-protect ... 
...)))
  (with-temp-buffer (set-buffer-multibyte nil) (let (... ...) (when ... ... 
...) (apply ... prog ... t nil args) (buffer-substring ... ...)))
  vc-bzr-sha1("d:/thesis.repo/thesis.trunk/ClassicThesis.tex")
  vc-bzr-state-heuristic("d:/thesis.repo/thesis.trunk/ClassicThesis.tex")
  vc-bzr-registered("d:/thesis.repo/thesis.trunk/ClassicThesis.tex")
  apply(vc-bzr-registered "d:/thesis.repo/thesis.trunk/ClassicThesis.tex")
  vc-call-backend(Bzr registered 
"d:/thesis.repo/thesis.trunk/ClassicThesis.tex")
  #[(b) "      # .

Kind regards,
-- 
.:  Leo  :.  [ sdl.web AT gmail.com ]  .:  [ GPG Key: 9283AA3F ]  :.

        Use the better alternative -- http://www.openoffice.org/