Thanks for your fast response! The programm was installed as user and it's run as user. The files seem to have the right permissions. As far as I can see. Group has read only but group is same as user. So I guess that should not be the issue. The konsole output is no more than: fixme:font:SetMapperFlags (0x3e0, 0x00000001): stub - harmless Version: wine-1.0.1 (from official ubuntu repositories) Any other ideas?