I just installed the Phonon 5 KCM in my Plasma 5 instalation, but it crashes at startup. I'm currently using it with the vlc backend.

Backtrace follows:

Application: Configurações do sistema (systemsettings), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4790009780 (LWP 23834))]

Thread 2 (Thread 0x7f4780789700 (LWP 23835)):
#0  0x00007f478bb82fbd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f478a429b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f478a42b64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f4782739c89 in QXcbEventReader::run (this=0x193f8a0) at qxcbconnection.cpp:1043
#4  0x00007f478c20ae11 in QThreadPrivate::start (arg=0x193f8a0) at thread/qthread_unix.cpp:345
#5  0x00007f4788c02182 in start_thread (arg=0x7f4780789700) at pthread_create.c:312
#6  0x00007f478bb9030d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f4790009780 (LWP 23834)):
[KCrash Handler]
#6  ref (this=<optimized out>) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86_64.h:121
#7  QList (this=0x7f476b78d4f8 <QPrinterInfoPrivate::shared_null+24>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:121
#8  QPrinterInfoPrivate (name=..., this=0x7f476b78d4e0 <QPrinterInfoPrivate::shared_null>) at painting/qprinterinfo_p.h:71
#9  __static_initialization_and_destruction_0 (__initialize_p=1, __priority=65535) at painting/qprinterinfo.cpp:35
#10 _GLOBAL__sub_I_qprinterinfo.cpp(void) () at painting/qprinterinfo.cpp:163
#11 0x00007f478fe3f13a in call_init (l=<optimized out>, argc=argc@entry=1, argv=argv@entry=0x7fff380aad58, env=env@entry=0x7fff380aad68) at dl-init.c:78
#12 0x00007f478fe3f223 in call_init (env=<optimized out>, argv=<optimized out>, argc=<optimized out>, l=<optimized out>) at dl-init.c:36
#13 _dl_init (main_map=main_map@entry=0x1d18b40, argc=1, argv=0x7fff380aad58, env=0x7fff380aad68) at dl-init.c:126
#14 0x00007f478fe43c70 in dl_open_worker (a=a@entry=0x7fff380a6688) at dl-open.c:577
#15 0x00007f478fe3eff4 in _dl_catch_error (objname=objname@entry=0x7fff380a6678, errstring=errstring@entry=0x7fff380a6680, mallocedp=mallocedp@entry=0x7fff380a6670, operate=operate@entry=0x7f478fe439a0 <dl_open_worker>, args=args@entry=0x7fff380a6688) at dl-error.c:187
#16 0x00007f478fe433bb in _dl_open (file=0x1c6b070 "/usr/lib/vlc/plugins/gui/libqt4_plugin.so", mode=-2147483647, caller_dlopen=<optimized out>, nsid=-2, argc=1, argv=0x7fff380aad58, env=0x7fff380aad68) at dl-open.c:661
#17 0x00007f478725a02b in dlopen_doit (a=a@entry=0x7fff380a68a0) at dlopen.c:66
#18 0x00007f478fe3eff4 in _dl_catch_error (objname=0x192dbe0, errstring=0x192dbe8, mallocedp=0x192dbd8, operate=0x7f4787259fd0 <dlopen_doit>, args=0x7fff380a68a0) at dl-error.c:187
#19 0x00007f478725a62d in _dlerror_run (operate=operate@entry=0x7f4787259fd0 <dlopen_doit>, args=args@entry=0x7fff380a68a0) at dlerror.c:163
#20 0x00007f478725a0c1 in __dlopen (file=file@entry=0x1c6b070 "/usr/lib/vlc/plugins/gui/libqt4_plugin.so", mode=<optimized out>) at dlopen.c:87
#21 0x00007f476c0eae9f in module_Load (p_this=p_this@entry=0x1c562c8, path=path@entry=0x1c6b070 "/usr/lib/vlc/plugins/gui/libqt4_plugin.so", p_handle=p_handle@entry=0x7fff380a68f8, lazy=<optimized out>) at posix/plugin.c:60
#22 0x00007f476c0d462d in module_InitDynamic (obj=0x1c562c8, path=0x1c6b070 "/usr/lib/vlc/plugins/gui/libqt4_plugin.so", fast=<optimized out>) at modules/bank.c:586
#23 0x00007f476c0d4927 in AllocatePluginFile (st=<optimized out>, relpath=<optimized out>, abspath=<optimized out>, bank=<optimized out>) at modules/bank.c:529
#24 AllocatePluginDir (bank=0x7fff380a6b50, maxdepth=940223832, absdir=0x7fff380aad01 "\255\n8\377\177", reldir=0x1d1d110 "gui") at modules/bank.c:490
#25 0x00007f476c0d4b99 in AllocatePluginDir (bank=0x7fff380a6b50, maxdepth=940223832, maxdepth@entry=5, absdir=0x7fff380aad01 "\255\n8\377\177", absdir@entry=0x1c82d80 "/usr/lib/vlc/plugins", reldir=0x0) at modules/bank.c:494
#26 0x00007f476c0d4e04 in AllocatePluginPath (p_this=p_this@entry=0x1c562c8, path=0x1c82d80 "/usr/lib/vlc/plugins", mode=mode@entry=CACHE_USE) at modules/bank.c:403
#27 0x00007f476c0d5357 in AllocateAllPlugins (p_this=0x1c562c8) at modules/bank.c:330
#28 module_LoadPlugins (obj=obj@entry=0x1c562c8) at modules/bank.c:186
#29 0x00007f476c06cd1d in libvlc_InternalInit (p_libvlc=p_libvlc@entry=0x1c562c8, i_argc=i_argc@entry=11, ppsz_argv=ppsz_argv@entry=0x7fff380a6cd0) at libvlc.c:159
#30 0x00007f476be47b83 in libvlc_new (argc=10, argv=<optimized out>) at core.c:59
#31 0x00007f476c36a2de in LibVLC::init () at /build/buildd/project-neon5-phonon4qt5-vlc-0.0+git20140623+r579~37ba2f6+neon14~ubuntu14.04.1/src/utils/libvlc.cpp:117
#32 0x00007f476c353957 in Phonon::VLC::Backend::Backend (this=0x1c45c60, parent=<optimized out>) at /build/buildd/project-neon5-phonon4qt5-vlc-0.0+git20140623+r579~37ba2f6+neon14~ubuntu14.04.1/src/backend.cpp:89
#33 0x00007f476c36c73b in qt_plugin_instance () at /build/buildd/project-neon5-phonon4qt5-vlc-0.0+git20140623+r579~37ba2f6+neon14~ubuntu14.04.1/obj-x86_64-linux-gnu/src/moc_backend.cpp:237
#34 0x00007f478c464add in QPluginLoader::instance (this=0x7fff380a71a0) at plugin/qpluginloader.cpp:200
#35 0x00007f477ee730ad in Phonon::FactoryPrivate::tryCreateBackend (this=this@entry=0x1c137e0, path=...) at /build/buildd/project-neon5-phonon4qt5-0.0+git20140620.1+r2824~f0db9fe+neon5~ubuntu14.04.1/phonon/factory.cpp:117
#36 0x00007f477ee743c6 in Phonon::FactoryPrivate::createSuitableBackend (this=this@entry=0x1c137e0, libPath=..., plugins=...) at /build/buildd/project-neon5-phonon4qt5-0.0+git20140620.1+r2824~f0db9fe+neon5~ubuntu14.04.1/phonon/factory.cpp:215
#37 0x00007f477ee74802 in Phonon::FactoryPrivate::createBackend (this=0x1c137e0) at /build/buildd/project-neon5-phonon4qt5-0.0+git20140620.1+r2824~f0db9fe+neon5~ubuntu14.04.1/phonon/factory.cpp:299
#38 0x00007f477ee74b34 in Phonon::Factory::backend (createWhenNull=createWhenNull@entry=true) at /build/buildd/project-neon5-phonon4qt5-0.0+git20140620.1+r2824~f0db9fe+neon5~ubuntu14.04.1/phonon/factory.cpp:572
#39 0x00007f477ee783e7 in Phonon::GlobalConfig::audioOutputDeviceListFor (this=0x7fff380a7580, category=Phonon::NoCategory, override=2) at /build/buildd/project-neon5-phonon4qt5-0.0+git20140620.1+r2824~f0db9fe+neon5~ubuntu14.04.1/phonon/globalconfig.cpp:438
#40 0x00007f47709bb8b2 in Phonon::DevicePreference::loadCategoryDevices (this=0x1bf0c70) at /build/buildd/project-neon5-plasma-desktop-0.0+git20140704.0729+neon4~b3772b4~14.04/kcms/phonon/devicepreference.cpp:521
#41 0x00007f47709bb848 in Phonon::DevicePreference::load (this=0x1bf0c70) at /build/buildd/project-neon5-plasma-desktop-0.0+git20140704.0729+neon4~b3772b4~14.04/kcms/phonon/devicepreference.cpp:512
#42 0x00007f47709b81a8 in PhononKcm::load (this=0x1bd5bc0) at /build/buildd/project-neon5-plasma-desktop-0.0+git20140704.0729+neon4~b3772b4~14.04/kcms/phonon/main.cpp:77
#43 0x00007f47709b80a1 in PhononKcm::PhononKcm (this=0x1bd5bc0, parent=0x1bdb0a0, args=...) at /build/buildd/project-neon5-plasma-desktop-0.0+git20140704.0729+neon4~b3772b4~14.04/kcms/phonon/main.cpp:62
#44 0x00007f47709b8a07 in KPluginFactory::createInstance<PhononKcm, QWidget> (parentWidget=0x0, parent=0x1bdb0a0, args=...) at /opt/project-neon5/include/KF5/KCoreAddons/kpluginfactory.h:457
#45 0x00007f478c7a880a in KPluginFactory::create (this=0x1bd0b40, iface=0x7f478e6c9988 "KCModule", parentWidget=0x0, parent=0x1bdb0a0, args=..., keyword=...) at /build/buildd/project-neon5-kcoreaddons-0.0+git20140704.0726+neon4~3bf93e9~14.04/src/lib/plugin/kpluginfactory.cpp:145
#46 0x00007f478f9d6c5e in KPluginFactory::create<KCModule> (this=0x1bd0b40, parentWidget=0x0, parent=0x1bdb0a0, keyword=..., args=...) at /opt/project-neon5/include/KF5/KCoreAddons/kpluginfactory.h:519
#47 0x00007f478f9d673a in KService::createInstance<KCModule> (this=0x1a96fe0, parentWidget=0x0, parent=0x1bdb0a0, args=..., error=0x7fff380a79e0) at /opt/project-neon5/include/KF5/KService/kservice.h:526
#48 0x00007f478f9d63f2 in KService::createInstance<KCModule> (this=0x1a96fe0, parent=0x1bdb0a0, args=..., error=0x7fff380a79e0) at /opt/project-neon5/include/KF5/KService/kservice.h:501
#49 0x00007f478f9d5511 in KCModuleLoader::loadModule (mod=..., report=KCModuleLoader::Inline, parent=0x1bdb0a0, args=...) at /build/buildd/project-neon5-kcmutils-0.0+git20140704.0728+neon4~7525421~14.04/src/kcmoduleloader.cpp:89
#50 0x00007f478f9dbed0 in KCModuleProxyPrivate::loadModule (this=0x1bdb0e0) at /build/buildd/project-neon5-kcmutils-0.0+git20140704.0728+neon4~7525421~14.04/src/kcmoduleproxy.cpp:106
#51 0x00007f478f9dbb46 in KCModuleProxy::realModule (this=0x1bdb0a0) at /build/buildd/project-neon5-kcmutils-0.0+git20140704.0728+neon4~7525421~14.04/src/kcmoduleproxy.cpp:82
#52 0x00007f478f9dc690 in KCModuleProxy::showEvent (this=0x1bdb0a0, ev=0x7fff380a8200) at /build/buildd/project-neon5-kcmutils-0.0+git20140704.0728+neon4~7525421~14.04/src/kcmoduleproxy.cpp:192
#53 0x00007f478d8a3b71 in QWidget::event (this=0x1bdb0a0, event=0x7fff380a8200) at kernel/qwidget.cpp:8180
#54 0x00007f478d85a3fa in QApplicationPrivate::notify_helper (this=0x192a750, receiver=0x1bdb0a0, e=0x7fff380a8200) at kernel/qapplication.cpp:3522
#55 0x00007f478d85a25e in QApplication::notify (this=0x7fff380aac40, receiver=0x1bdb0a0, e=0x7fff380a8200) at kernel/qapplication.cpp:3487
#56 0x00007f478c47942a in QCoreApplication::notifyInternal (this=0x7fff380aac40, receiver=0x1bdb0a0, event=0x7fff380a8200) at kernel/qcoreapplication.cpp:935
#57 0x00007f478d84c149 in QCoreApplication::sendEvent (receiver=0x1bdb0a0, event=0x7fff380a8200) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:237
#58 0x00007f478d8a13f2 in QWidgetPrivate::show_helper (this=0x1bdd500) at kernel/qwidget.cpp:7183
#59 0x00007f478d8a0e40 in QWidgetPrivate::show_recursive (this=0x1bdd500) at kernel/qwidget.cpp:7059
#60 0x00007f478d8a2212 in QWidgetPrivate::showChildren (this=0x1bc8140, spontaneous=false) at kernel/qwidget.cpp:7476
#61 0x00007f478d8a1251 in QWidgetPrivate::show_helper (this=0x1bc8140) at kernel/qwidget.cpp:7135
#62 0x00007f478d8a1da1 in QWidget::setVisible (this=0x1bda190, visible=true) at kernel/qwidget.cpp:7395
#63 0x00007f478d8a0d41 in QWidget::show (this=0x1bda190) at kernel/qwidget.cpp:7036
#64 0x00007f478d8a2220 in QWidgetPrivate::showChildren (this=0x1bd9ef0, spontaneous=false) at kernel/qwidget.cpp:7478
#65 0x00007f478d8a1251 in QWidgetPrivate::show_helper (this=0x1bd9ef0) at kernel/qwidget.cpp:7135
#66 0x00007f478d8a1da1 in QWidget::setVisible (this=0x1bb8f30, visible=true) at kernel/qwidget.cpp:7395
#67 0x00007f478d8a0d41 in QWidget::show (this=0x1bb8f30) at kernel/qwidget.cpp:7036
#68 0x00007f478d88a815 in QStackedLayout::setCurrentIndex (this=0x1b44100, index=1) at kernel/qstackedlayout.cpp:332
#69 0x00007f478d88aa25 in QStackedLayout::setCurrentWidget (this=0x1b44100, widget=0x1bb8f30) at kernel/qstackedlayout.cpp:387
#70 0x00007f478da6352f in QStackedWidget::setCurrentWidget (this=0x1b43990, widget=0x1bb8f30) at widgets/qstackedwidget.cpp:250
#71 0x00007f478e1b1599 in KPageViewPrivate::_k_pageSelected (this=0x1b454f0, index=..., previous=...) at /build/buildd/project-neon5-kwidgetsaddons-0.0+git20140704.0726+neon4~1c06448~14.04/src/kpageview.cpp:246
#72 0x00007f478e1b24ad in KPageView::qt_static_metacall (_o=0x1b43460, _c=QMetaObject::InvokeMetaMethod, _id=3, _a=0x7fff380a8970) at /build/buildd/project-neon5-kwidgetsaddons-0.0+git20140704.0726+neon4~1c06448~14.04/obj-x86_64-linux-gnu/src/moc_kpageview.cpp:113
#73 0x00007f478c4bb142 in QMetaObject::activate (sender=0x1bd81d0, signalOffset=3, local_signal_index=0, argv=0x7fff380a8970) at kernel/qobject.cpp:3680
#74 0x00007f478c4ba93e in QMetaObject::activate (sender=0x1bd81d0, m=0x7f478c7636a0 <QItemSelectionModel::staticMetaObject>, local_signal_index=0, argv=0x7fff380a8970) at kernel/qobject.cpp:3546
#75 0x00007f478c4333eb in QItemSelectionModel::selectionChanged (this=0x1bd81d0, _t1=..., _t2=...) at .moc/moc_qitemselectionmodel.cpp:279
#76 0x00007f478c43273a in QItemSelectionModel::emitSelectionChanged (this=0x1bd81d0, newSelection=..., oldSelection=...) at itemmodels/qitemselectionmodel.cpp:1686
#77 0x00007f478c430203 in QItemSelectionModel::select (this=0x1bd81d0, selection=..., command=...) at itemmodels/qitemselectionmodel.cpp:1242
#78 0x00007f478c42fdf7 in QItemSelectionModel::select (this=0x1bd81d0, index=..., command=...) at itemmodels/qitemselectionmodel.cpp:1117
#79 0x00007f478c430625 in QItemSelectionModel::setCurrentIndex (this=0x1bd81d0, index=..., command=...) at itemmodels/qitemselectionmodel.cpp:1313
#80 0x00007f478e1b0aba in KPageViewPrivate::_k_rebuildGui (this=0x1b454f0) at /build/buildd/project-neon5-kwidgetsaddons-0.0+git20140704.0726+neon4~1c06448~14.04/src/kpageview.cpp:68
#81 0x00007f478e1b12cc in KPageViewPrivate::_k_modelChanged (this=0x1b454f0) at /build/buildd/project-neon5-kwidgetsaddons-0.0+git20140704.0726+neon4~1c06448~14.04/src/kpageview.cpp:199
#82 0x00007f478e1b247b in KPageView::qt_static_metacall (_o=0x1b43460, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0x7fff380a8f90) at /build/buildd/project-neon5-kwidgetsaddons-0.0+git20140704.0726+neon4~1c06448~14.04/obj-x86_64-linux-gnu/src/moc_kpageview.cpp:112
#83 0x00007f478c4bb142 in QMetaObject::activate (sender=0x1b48e50, signalOffset=3, local_signal_index=3, argv=0x7fff380a8f90) at kernel/qobject.cpp:3680
#84 0x00007f478c4ba93e in QMetaObject::activate (sender=0x1b48e50, m=0x7f478c766bc0 <QAbstractItemModel::staticMetaObject>, local_signal_index=3, argv=0x7fff380a8f90) at kernel/qobject.cpp:3546
#85 0x00007f478c54697e in QAbstractItemModel::layoutChanged (this=0x1b48e50, _t1=..., _t2=QAbstractItemModel::NoLayoutChangeHint) at .moc/moc_qabstractitemmodel.cpp:406
#86 0x00007f478e1b86b9 in KPageWidgetModel::addPage (this=0x1b48e50, item=0x1bdb000) at /build/buildd/project-neon5-kwidgetsaddons-0.0+git20140704.0726+neon4~1c06448~14.04/src/kpagewidgetmodel.cpp:423
#87 0x00007f478e1b6a8f in KPageWidget::addPage (this=0x1b43460, item=0x1bdb000) at /build/buildd/project-neon5-kwidgetsaddons-0.0+git20140704.0726+neon4~1c06448~14.04/src/kpagewidget.cpp:89
#88 0x00007f478fc213b6 in ModuleView::addModule (this=0x1b457c0, module=0x1a9d268) at /build/buildd/project-neon5-systemsettings-0.0+git20140704.0731+neon4~ecac61f~14.04/core/ModuleView.cpp:196
#89 0x00007f478fc20e78 in ModuleView::loadModule (this=0x1b457c0, menuItem=...) at /build/buildd/project-neon5-systemsettings-0.0+git20140704.0731+neon4~ecac61f~14.04/core/ModuleView.cpp:149
#90 0x00007f4771584f42 in IconMode::changeModule (this=0x1b417e0, activeModule=...) at /build/buildd/project-neon5-systemsettings-0.0+git20140704.0731+neon4~ecac61f~14.04/icons/IconMode.cpp:145
#91 0x00007f477158903b in IconMode::qt_static_metacall (_o=0x1b417e0, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7fff380a9370) at /build/buildd/project-neon5-systemsettings-0.0+git20140704.0731+neon4~ecac61f~14.04/obj-x86_64-linux-gnu/icons/moc_IconMode.cpp:84
#92 0x00007f478c4bb142 in QMetaObject::activate (sender=0x1b63090, signalOffset=7, local_signal_index=3, argv=0x7fff380a9370) at kernel/qobject.cpp:3680
#93 0x00007f478c4ba93e in QMetaObject::activate (sender=0x1b63090, m=0x7f478e09c700 <QAbstractItemView::staticMetaObject>, local_signal_index=3, argv=0x7fff380a9370) at kernel/qobject.cpp:3546
#94 0x00007f478db37295 in QAbstractItemView::activated (this=0x1b63090, _t1=...) at .moc/moc_qabstractitemview.cpp:603
#95 0x00007f478db2c81e in QAbstractItemView::mouseReleaseEvent (this=0x1b63090, event=0x7fff380aa060) at itemviews/qabstractitemview.cpp:1868
#96 0x00007f478db4cd21 in QListView::mouseReleaseEvent (this=0x1b63090, e=0x7fff380aa060) at itemviews/qlistview.cpp:799
#97 0x00007f478b868443 in KCategorizedView::mouseReleaseEvent (this=0x1b63090, event=0x7fff380aa060) at /build/buildd/project-neon5-kitemviews-0.0+git20140704.0726+neon4~73efe3c~14.04/src/kcategorizedview.cpp:1031
#98 0x00007f478d8a2fd8 in QWidget::event (this=0x1b63090, event=0x7fff380aa060) at kernel/qwidget.cpp:7965
#99 0x00007f478d9f49c1 in QFrame::event (this=0x1b63090, e=0x7fff380aa060) at widgets/qframe.cpp:534
#100 0x00007f478da90731 in QAbstractScrollArea::viewportEvent (this=0x1b63090, e=0x7fff380aa060) at widgets/qabstractscrollarea.cpp:1194
#101 0x00007f478db2b6b7 in QAbstractItemView::viewportEvent (this=0x1b63090, event=0x7fff380aa060) at itemviews/qabstractitemview.cpp:1689
#102 0x00007f478da9198d in QAbstractScrollAreaPrivate::viewportEvent (this=0x1b630d0, event=0x7fff380aa060) at widgets/qabstractscrollarea_p.h:110
#103 0x00007f478da91a54 in QAbstractScrollAreaFilter::eventFilter (this=0x1b65650, o=0x1b636c0, e=0x7fff380aa060) at widgets/qabstractscrollarea_p.h:126
#104 0x00007f478c479783 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x192a750, receiver=0x1b636c0, event=0x7fff380aa060) at kernel/qcoreapplication.cpp:1031
#105 0x00007f478d85a3d1 in QApplicationPrivate::notify_helper (this=0x192a750, receiver=0x1b636c0, e=0x7fff380aa060) at kernel/qapplication.cpp:3518
#106 0x00007f478d858227 in QApplication::notify (this=0x7fff380aac40, receiver=0x1b636c0, e=0x7fff380aa060) at kernel/qapplication.cpp:3089
#107 0x00007f478c47942a in QCoreApplication::notifyInternal (this=0x7fff380aac40, receiver=0x1b636c0, event=0x7fff380aa060) at kernel/qcoreapplication.cpp:935
#108 0x00007f478d85c60b in QCoreApplication::sendSpontaneousEvent (receiver=0x1b636c0, event=0x7fff380aa060) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:240
#109 0x00007f478d856acb in QApplicationPrivate::sendMouseEvent (receiver=0x1b636c0, event=0x7fff380aa060, alienWidget=0x1b636c0, nativeWidget=0x19a7350, buttonDown=0x7f478e0b6750 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2562
#110 0x00007f478d8cee4d in QWidgetWindow::handleMouseEvent (this=0x1acedd0, event=0x7fff380aa6f0) at kernel/qwidgetwindow.cpp:507
#111 0x00007f478d8cdbf7 in QWidgetWindow::event (this=0x1acedd0, event=0x7fff380aa6f0) at kernel/qwidgetwindow.cpp:179
#112 0x00007f478d85a3fa in QApplicationPrivate::notify_helper (this=0x192a750, receiver=0x1acedd0, e=0x7fff380aa6f0) at kernel/qapplication.cpp:3522
#113 0x00007f478d857a42 in QApplication::notify (this=0x7fff380aac40, receiver=0x1acedd0, e=0x7fff380aa6f0) at kernel/qapplication.cpp:2975
#114 0x00007f478c47942a in QCoreApplication::notifyInternal (this=0x7fff380aac40, receiver=0x1acedd0, event=0x7fff380aa6f0) at kernel/qcoreapplication.cpp:935
#115 0x00007f478cff59a3 in QCoreApplication::sendSpontaneousEvent (receiver=0x1acedd0, event=0x7fff380aa6f0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:240
#116 0x00007f478cfef168 in QGuiApplicationPrivate::processMouseEvent (e=0x1bdaa50) at kernel/qguiapplication.cpp:1711
#117 0x00007f478cfee734 in QGuiApplicationPrivate::processWindowSystemEvent (e=0x1bdaa50) at kernel/qguiapplication.cpp:1512
#118 0x00007f478cfd8f21 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:579
#119 0x00007f4782793ae0 in userEventSourceDispatch (source=0x1977a20) at eventdispatchers/qeventdispatcher_glib.cpp:78
#120 0x00007f47886e9e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#121 0x00007f47886ea048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#122 0x00007f47886ea0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#123 0x00007f478c4efa1d in QEventDispatcherGlib::processEvents (this=0x1975790, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#124 0x00007f4782793cf2 in QPAEventDispatcherGlib::processEvents (this=0x1975790, flags=...) at eventdispatchers/qeventdispatcher_glib.cpp:123
#125 0x00007f478c476162 in QEventLoop::processEvents (this=0x7fff380aab10, flags=...) at kernel/qeventloop.cpp:136
#126 0x00007f478c476423 in QEventLoop::exec (this=0x7fff380aab10, flags=...) at kernel/qeventloop.cpp:212
#127 0x00007f478c479ae2 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#128 0x00007f478cfee4e0 in QGuiApplication::exec () at kernel/qguiapplication.cpp:1446
#129 0x00007f478d857263 in QApplication::exec () at kernel/qapplication.cpp:2767
#130 0x0000000000420f4f in main (argc=1, argv=0x7fff380aad58) at /build/buildd/project-neon5-systemsettings-0.0+git20140704.0731+neon4~ecac61f~14.04/app/main.cpp:55


Reproducible: Always

Steps to Reproduce:
1. Open systemsettings
2. Open the "Multimedia" module
Actual Results:  
KCM opens

Expected Results:  
Systemsettings crashes