Bug#580355: Fixed via kdeinit restart
I killed all running kdeinit-related processes, re-started kate, and now
the error is gone.
How to restart kdeinit:
0) Exit kate.
1) Check for kde-related processes. You should find kdeinit or kdeinit4,
2) Kill these processes.
should be sufficient.
3) Launch kate.
Note that kdeinit will restart automatically. If you need kded,
you will need to launch it separately.
Moshe Yudkowsky * email@example.com * www.pobox.com/~moshe