LSR 2.20 #724 cannot be upgrated automagically

[Pierre Perol-Schneider]

Hi BugSquad,
Making some tests for the LSR v.2.20, I'm stuck with:
http://lsr.di.unimi.it/LSR/Item?id=724

Starting lilypond-windows.exe 2.19.84 [
autochange-music-with-a-different-pitch.ly]...
Processing `C:/Users/Pierre/Documents/LilyPond/000 LSR/
autochange-music-with-a-different-pitch.ly'
Parsing...C:/Users/Pierre/Documents/LilyPond/000
LSR/autochange-music-with-a-different-pitch.ly:24:14: In procedure
make-autochange-music in expression (make-autochange-music (if ref # ...)):
C:/Users/Pierre/Documents/LilyPond/000
LSR/autochange-music-with-a-different-pitch.ly:24:14: Wrong number of
arguments to #<procedure make-autochange-music (ref-pitch music)>
Exited with return code 1.

Any idea?
TIA, cheers,
Pierre