Neal,
I opened Konsole and here is the resulting interaction:
[jan@localhost ~]$ dbus-launch kwrite
kdeinit4: Shutting down running client.
kdeinit4: preparing to launch /usr/lib/libkdeinit4_klauncher.so
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
kdeinit4: preparing to launch /usr/lib/libkdeinit4_kded4.so
kdeinit4: preparing to launch /usr/lib/libkdeinit4_kbuildsycoca4.so
kbuildsycoca4 running...
kdeinit4: preparing to launch /usr/lib/libkdeinit4_kconf_update.so
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
kded(3988): PowerDevil not initialized, another power manager has been detected
QObject::connect: Cannot connect (null)::accessibilityChanged(bool, const QString) to DeviceAutomounter::deviceMountChanged(bool, const QString)
QObject::connect: Cannot connect (null)::accessibilityChanged(bool, const QString) to DeviceAutomounter::deviceMountChanged(bool, const QString)
klauncher: Exiting on signal 15
[jan@localhost ~]$
When the last message appeared, "klauncher......" Kwrite opened. When I closed Kwrite, the last prompt above appeared. At this point, with no Kwrite open, I went to PC > Editors > Kwrite, and Kwrite opened properly.
(1) I have not rebooted to see if this holds. Is it necessary to do that?
(2) What is dbus-launch and why did it fix this problem?
(3) Should I try this approach, dbus-launch [name of program] on anything that causes an error message?
Jan