No system tray icon with latest linux client (SoulseekQt-2014-5-4-64bit)

I just download and use latest build from the following link.
https://www.dropbox.com/s/kge1rcgcbs8hmgw/SoulseekQt-2014-5-4-64bit.tar.gz

The only problem I realize is invisible system tray icon.

My system is 64bit Linuxmint 17.

Log file: http://pastebin.com/jrgEYmit