Crash when saving file

Hello,
I'm running MuseScore 0.9.6 stable version on Fedora 12 32-bit. Mscore crashes everytime I try to save newly created file.

[piotr@localhost ~]$ mscore
link SVGID_3_ hasn't been detected!
link SVGID_3_ hasn't been detected!
registerPlugin: add action idx 11
Load plugin: no menu property
preferences.checkUpdateStartup: 720
lastupdate: 30.06.2010 11:05:52.790
QString::arg: Argument missing: "Takt 1% Miara 1. 1" , 0
JACK ERROR: JackActivationCount::Signal value = 0 ref = 3
.........
..........
Naruszenie ochrony pamięci (core dumped)