It is likely you are running the Oxygen desktop theme, on KDE which
causes this.
The solution run command : (your path ./kcomm -style=cleanlooks)
GUI is up and running. Works well with the k3 ,put the fldigi path in
settings manually, file browser can cause a crash. Tested on 32 & 64 bit
machines ok.
I am looking at compiling a source package for modern distros.