midi2ly fails on OSX 10.6.8

[Floris van Manen]

L.S.
While trying to launch the midi2ly app, it will fail to start:

$/Applications/LilyPond.app/Contents/Resources/bin/midi2ly
Traceback (most recent call last):
File "/Applications/LilyPond.app/Contents/Resources/bin/midi2ly", 
line 54, in <module>
import midi
ImportError: 
dlopen(
/Applications/LilyPond.app/
Contents/Resources/lib/lilypond/current/python/midi.so, 2):
no suitable image found.  
Did find:
/Applications/LilyPond.app/
Contents/Resources/lib/lilypond/current/python/midi.so: 
mach-o, but wrong architecture



(I had to break up the lines, as this mailing app will not allow 
lines longer then 80 chars. why?)


Any hints as how to proceed ?
Thanks !
Floris