Hi: I was using K3b for many years on Suse 9.3 and since a few month
it does not work any more and even an uninstall and reinstall does not fix the
problem. Recently I tried it under PCLinuxOS XFCE and it did not work. I also
tried it on Tiny Core 3.3 the other day.
My suggestion: ignore it and use Xfburn from the TC extensions.