Error: "/var/tmp/kdecache-kubuntu" is owned by uid 999 instead of uid 0.
kdialog(16584)/kdeui (kdelibs): Session bus not found 
To circumvent this problem try the following command (with Linux and bash) 
export $(dbus-launch) 
KCrash: Application 'kdialog' crashing...
KCrash: Attempting to start /usr/lib/kde4/libexec/drkonqi from kdeinit
sock_file=/home/kubuntu/.kde/socket-kubuntu/kdeinit4__0
Unable to start Dr. Konqi
Not forwarding the crash to Apport.