The software crashes on start-up. The package used is : http://aur.archlinux.org/packages.php?ID=26999
It prrints "Exception floating point"
In tray.c, max_frequency is set to 0!
I suspect in getfreq.c gf_init() does not cork fine. gc_number return NUMBER_OF_AVAILABLE_FREQUENCIES which seems to not be initialized (global variables are evil by the way).
I let you to investigate deaper.