Application: plasmashell (5.3.0)

Qt Version: 5.4.1
Operating System: Linux 3.19.5-200.fc21.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
- What I was doing when the application crashed:

I uninstalled kde4-desktop after trying to install unsuccesfully the plasma-5 version from dvratil/plasma-5
Then I ran the yum installer to try to install the plasma-5 version.

Now, KDE5 crashes after login. Also, the lock screen does not respond to any action (when login-in using Gnome).

- Custom settings of the application:

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fed6e281900 (LWP 5189))]

Thread 2 (Thread 0x7fed50ffc700 (LWP 5194)):
#0  0x00007fed673541dd in poll () from /lib64/libc.so.6
#1  0x00007fed6a9c6182 in _xcb_conn_wait () from /lib64/libxcb.so.1
#2  0x00007fed6a9c7cff in xcb_wait_for_event () from /lib64/libxcb.so.1
#3  0x00007fed52b43959 in QXcbEventReader::run() () from /usr/lib64/qt5/plugins/platforms/libqxcb.so
#4  0x00007fed67eed0ce in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007fed6704a52a in start_thread () from /lib64/libpthread.so.0
#6  0x00007fed6735f77d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fed6e281900 (LWP 5189)):
[KCrash Handler]
#5  0x00007fed672938c7 in raise () from /lib64/libc.so.6
#6  0x00007fed6729552a in abort () from /lib64/libc.so.6
#7  0x00007fed67eda72f in QMessageLogger::fatal(char const*, ...) const () from /lib64/libQt5Core.so.5
#8  0x00007fed68106b31 in QObjectPrivate::QObjectPrivate(int) () from /lib64/libQt5Core.so.5
#9  0x00007fed6a3a3ee4 in QQmlEnginePrivate::QQmlEnginePrivate(QQmlEngine*) () from /lib64/libQt5Qml.so.5
#10 0x00007fed6a3a70a2 in QQmlEngine::QQmlEngine(QObject*) () from /lib64/libQt5Qml.so.5
#11 0x00007fed6c80cd0f in KDeclarative::QmlObject::QmlObject(QObject*) () from /lib64/libKF5Declarative.so.5
#12 0x0000000000466351 in Osd::Osd(ShellCorona*) ()
#13 0x000000000045889f in ShellCorona::ShellCorona(QObject*) ()
#14 0x0000000000462224 in ShellManager::loadHandlers() ()
#15 0x000000000048470d in ShellManager::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) ()
#16 0x00007fed6810986a in QObject::event(QEvent*) () from /lib64/libQt5Core.so.5
#17 0x00007fed689c495c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#18 0x00007fed689c9da0 in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#19 0x00007fed680d86eb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#20 0x00007fed680da72b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib64/libQt5Core.so.5
#21 0x00007fed681303d3 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5
#22 0x00007fed62f5d7fb in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#23 0x00007fed62f5db98 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#24 0x00007fed62f5dc4c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#25 0x00007fed681307c7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#26 0x00007fed680d5f82 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#27 0x00007fed680dda2c in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#28 0x000000000042ee83 in main ()

Reported using DrKonqi