Lilypond will not launch under OSX 10.7 Lion

[Floris van Manen]

When trying to launch Lilypond under OSX 10.7 Lion it stops.
This is the console log:


Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]: Traceback 
(most recent call last):
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]:   File 
"/Applications/LilyPond.app/Contents/Resources/__boot__.py", line 31, in 
<module>
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]:     
_run('LilyPond.py')
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]:   File 
"/Applications/LilyPond.app/Contents/Resources/__boot__.py", line 28, in _run
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]:     
execfile(path, globals(), globals())
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]:   File 
"/Applications/LilyPond.app/Contents/Resources/LilyPond.py", line 3, in <module>
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]:     from 
PyObjCTools import AppHelper
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]:   File 
"PyObjCTools/AppHelper.pyc", line 14, in <module>
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]:   File 
"AppKit/__init__.pyc", line 8, in <module>
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]:   File 
"objc/__init__.pyc", line 22, in <module>
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]:   File 
"objc/__init__.pyc", line 19, in _update
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]:   File 
"objc/_objc.pyc", line 18, in <module>
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]:   File 
"objc/_objc.pyc", line 11, in __load
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]: ImportError: 
dlopen(/Applications/LilyPond.app/Contents/Resources/lib/python2.6/lib-dynload/objc/_objc.so,
 2): Symbol not found: _objc_sync_notify
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]:   Referenced 
from: 
/Applications/LilyPond.app/Contents/Resources/lib/python2.6/lib-dynload/objc/_objc.so
Jul 25 08:54:07 vm-mbp [0x0-0x8d08d].org.lilypond.lilypond[17953]:   Expected 
in: /usr/lib/libobjc.A.dylib
Jul 25 08:54:07 vm-mbp LilyPond[17953]: LilyPond Error
Jul 25 08:54:07 vm-mbp LilyPond[17953]: LilyPond Error  An unexpected error has 
occurred during execution of the main script
        
        ImportError: 
dlopen(/Applications/LilyPond.app/Contents/Resources/lib/python2.6/lib-
dynload/objc/_objc.so, 2): Symbol not found: _objc_sync_notify
          Referenced from: 
/Applications/LilyPond.app/Contents/Resources/lib/python2.6/lib-
dynload/objc/_objc.so
          Expected in: /usr/lib/libobjc.A.dylib
Jul 25 08:54:08 vm-mbp com.apple.backupd[1782]: Waiting for index to be ready 
(100)
Jul 25 08:54:17 vm-mbp com.apple.launchd.peruser.501[190] 
([0x0-0x8d08d].org.lilypond.lilypond[17953]): Exited with code: 255
Jul 25 08:54:18 vm-mbp UserEventAgent[11]: ServermgrdRegistration cannot load 
config data
Jul 25 08:54:18 vm-mbp UserEventAgent[11]: ServermgrdRegistration oldConfig is 
nil during net changed notification
 


Any hints as how to proceed ?
Thanks !
.Floris