I got one debug message when I did tests leading to the Canorus crash when closing a document:
drawableMusElement: 0x1d5ba50, x,y=346,86, w,h=11,10, dContext=0x2310640
musElement: 0x16715d0, timeStart=512, timeEnd=576, context=0x194b730,
voice=0x15b19f0, voiceNr=1, idxInVoice=13, voiceStaff=0x194b730, pitch=23
We should remove such debug messages until release.
See also bug #015400 (Berlios number) for details how to possibly get that message (but search in code is probably easier ;)