GLib-GObject: invalid

Dear Espen

I am having some problem on compilation of OpenMusic on this machine.  
Clg seems to work with hello-world.
My config is :

kernel :2.6.22-3-686
libgtk2.0-0 version : 2.12.1-1
sbcl 1.0.5


the error is :

WARNING: GLib-GObject: invalid (NULL) pointer instance

debugger invoked on a GLIB:CRITICAL-LOG-LEVEL in thread #<THREAD  
"initial thread" {A6984D9}>:
   GLib-GObject: g_signal_connect_data: assertion  
`G_TYPE_CHECK_INSTANCE (instance)' failed

Type HELP for debugger help, or (SB-EXT:QUIT) to exit from SBCL.

restarts (invokable by number or by possibly-abbreviated name):
   0: [ABORT] Exit debugger, returning to top level.

(NIL -303628736 -303628740 #<FUNCTION GLIB::LOG-HANDLER>)
0]


Is it related to the libgtk2 version ? because on other machines it  
works and libgtk is 2.10?
Or is it always the trouble with dynamic 3rd part libraries ?

Thanx
Karim


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