I use Debian 8 (jessie) and connect to my server with Sessman-Xvnc. When the connection is established the Bug Window pops up and vanish. When Connection is successful, the Window pops up again and Actions which depend on kded4 fail.

Data from the Popup:

Application: kded4 (4.14.2)
KDE Platform Version: 4.14.2
Qt Version: 4.8.6
Operating System: Linux 3.16.0-4-amd64 x86_64
Distribution: Debian GNU/Linux 8.8 (jessie)

Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[KCrash Handler]
#6  0x00007f17fe73899a in ?? () from /usr/lib/x86_64-linux-gnu/kde4/plugins/kscreen/1/KSC_XRandR11.so
#7  0x00007f17fed7d7b5 in KScreenDaemon::monitorConnectedChange() () from /usr/lib/kde4/kded_kscreen.so
#8  0x00007f17fed7de5f in KScreenDaemon::KScreenDaemon(QObject*, QList<QVariant> const&) () from /usr/lib/kde4/kded_kscreen.so
#9  0x00007f17fed7e968 in ?? () from /usr/lib/kde4/kded_kscreen.so
#10 0x00007f181bbdce83 in KPluginFactory::create(char const*, QWidget*, QObject*, QList<QVariant> const&, QString const&) () from /usr/lib/libkdecore.so.5
#11 0x00007f18059aa080 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kded4.so
#12 0x00007f18059aa9f9 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kded4.so
#13 0x00007f18059ab20e in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kded4.so
#14 0x00007f18059ab293 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kded4.so
#15 0x00007f18059ad9cd in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kded4.so
#16 0x00007f181c4406ca in ?? () from /usr/lib/libkdeui.so.5
#17 0x00007f181c4407ad in ?? () from /usr/lib/libkdeui.so.5
#18 0x00007f181c4409b3 in ?? () from /usr/lib/libkdeui.so.5
#19 0x00007f18189886c6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtDBus.so.4
#20 0x00007f1818989859 in ?? () from /usr/lib/x86_64-linux-gnu/libQtDBus.so.4
#21 0x00007f181898a2f0 in ?? () from /usr/lib/x86_64-linux-gnu/libQtDBus.so.4
#22 0x00007f181898a47b in ?? () from /usr/lib/x86_64-linux-gnu/libQtDBus.so.4
#23 0x00007f181b667e11 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#24 0x00007f181a9a47a3 in QApplication::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#25 0x00007f181a99f48c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#26 0x00007f181a9a5fa8 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#27 0x00007f181c4391aa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#28 0x00007f181b64e71d in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#29 0x00007f181b651fc1 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#30 0x00007f181b67dbd3 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#31 0x00007f18170e8c5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f18170e8f48 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f18170e8ffc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f181b67dd1d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#35 0x00007f181aa43f96 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#36 0x00007f181b64d271 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#37 0x00007f181b64d5d5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#38 0x00007f181b653059 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#39 0x00007f18059ac349 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_kded4.so
#40 0x00000000004084b0 in _start ()