Application: gwenview (5.0.0 pre)

Qt Version: 5.4.1
Operating System: Linux 3.18.6-1-ARCH x86_64
Distribution: "Arch Linux"

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

Browsing from a NEF to a JPG file.

- Unusual behavior I noticed:

Could not generate thumbnail for file "file:///home/jamie/Pictures/2014-10/DSC_8888.NEF"
Could not create a temporary file.
org.kde.kactivities.lib.core: Creating ResourceInstance: empty for now
Could not generate thumbnail for file "file:///home/jamie/Pictures/2014-10/DSC_8915.NEF"
KCrash: Application 'gwenview' crashing...
KCrash: Attempting to start /usr/lib/drkonqi from kdeinit
sock_file=/run/user/1000/kdeinit5__0
Waiting for already running kbuildsycoca4 to finish.
Waiting for already running kbuildsycoca4 to finish.
kbuildsycoca4 running...
kbuildsycoca4(9321)/kdecore (services) KServicePrivate::init: The desktop entry file  "/usr/share/applications/ristretto.desktop"  has Type= "Application"  but no Exec line 

kbuildsycoca4(9321) KBuildServiceFactory::createEntry: Invalid Service :  "/usr/share/applications/ristretto.desktop" 

(firefox:8742): Gtk-CRITICAL **: IA__gtk_clipboard_set_with_data: assertion 'targets != NULL' failed
1425418621718   addons.update-checker   WARN    Update manifest for {972ce4c6-7e08-4474-a285-3208198ce6fd} did not contain an updates property


- Custom settings of the application:

I am not using KDE/Plasma. I am using Arch.

The crash can be reproduced every time.

-- Backtrace:
Application: Gwenview (gwenview), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f1a5ebbf800 (LWP 8958))]

Thread 4 (Thread 0x7f1a5d6b4700 (LWP 8959)):
#0  0x00007f1a6e15c4ed in poll () from /usr/lib/libc.so.6
#1  0x00007f1a664de9f2 in ?? () from /usr/lib/libxcb.so.1
#2  0x00007f1a664e056f in xcb_wait_for_event () from /usr/lib/libxcb.so.1
#3  0x00007f1a5e9a7399 in ?? () from /usr/lib/qt/plugins/platforms/libqxcb.so
#4  0x00007f1a6e7d255e in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007f1a69317374 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007f1a6e16527d in clone () from /usr/lib/libc.so.6

Thread 3 (Thread 0x7f1a55e9c700 (LWP 8963)):
#0  0x00007f1a6931cd58 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007f1a6e7d35f8 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQt5Core.so.5
#2  0x00007f1a6e7cf5fc in ?? () from /usr/lib/libQt5Core.so.5
#3  0x00007f1a6e7d255e in ?? () from /usr/lib/libQt5Core.so.5
#4  0x00007f1a69317374 in start_thread () from /usr/lib/libpthread.so.0
#5  0x00007f1a6e16527d in clone () from /usr/lib/libc.so.6

Thread 2 (Thread 0x7f1a54e9a700 (LWP 8964)):
#0  0x00007f1a6931c9af in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007f1a6e7d36bb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQt5Core.so.5
#2  0x00007f1a726d039b in ?? () from /usr/lib/libgwenviewlib.so.5
#3  0x00007f1a6e7d255e in ?? () from /usr/lib/libQt5Core.so.5
#4  0x00007f1a69317374 in start_thread () from /usr/lib/libpthread.so.0
#5  0x00007f1a6e16527d in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0x7f1a5ebbf800 (LWP 8958)):
[KCrash Handler]
#5  0x00007f1a6f7f7580 in ?? () from /usr/lib/libQt5Widgets.so.5
#6  0x00007f1a6f7fc7bc in QGraphicsProxyWidget::focusNextPrevChild(bool) () from /usr/lib/libQt5Widgets.so.5
#7  0x00007f1a6f7e1c22 in QGraphicsItemPrivate::setVisibleHelper(bool, bool, bool, bool) () from /usr/lib/libQt5Widgets.so.5
#8  0x00007f1a6f7fb022 in QGraphicsProxyWidget::eventFilter(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#9  0x00007f1a6e9bdb04 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#10 0x00007f1a6f4d7aac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#11 0x00007f1a6f4dcf10 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#12 0x00007f1a6e9bdd1b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#13 0x00007f1a6f516a4a in QWidgetPrivate::hide_helper() () from /usr/lib/libQt5Widgets.so.5
#14 0x00007f1a6f51a8f0 in QWidget::setVisible(bool) () from /usr/lib/libQt5Widgets.so.5
#15 0x00007f1a6f516b94 in QWidgetPrivate::close_helper(QWidgetPrivate::CloseMode) () from /usr/lib/libQt5Widgets.so.5
#16 0x00007f1a6f5173ca in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#17 0x00007f1a6f517409 in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#18 0x00007f1a6f7f6dca in QGraphicsProxyWidget::~QGraphicsProxyWidget() () from /usr/lib/libQt5Widgets.so.5
#19 0x00007f1a6f7f6e09 in QGraphicsProxyWidget::~QGraphicsProxyWidget() () from /usr/lib/libQt5Widgets.so.5
#20 0x00007f1a6f7e923f in QGraphicsItem::~QGraphicsItem() () from /usr/lib/libQt5Widgets.so.5
#21 0x00007f1a6f7e95c3 in QGraphicsObject::~QGraphicsObject() () from /usr/lib/libQt5Widgets.so.5
#22 0x00007f1a6f83af97 in QGraphicsWidget::~QGraphicsWidget() () from /usr/lib/libQt5Widgets.so.5
#23 0x00007f1a72683289 in Gwenview::DocumentView::~DocumentView() () from /usr/lib/libgwenviewlib.so.5
#24 0x00007f1a6e9ef0a8 in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#25 0x00007f1a6f83c58b in QGraphicsWidget::event(QEvent*) () from /usr/lib/libQt5Widgets.so.5
#26 0x00007f1a6f4d7acc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#27 0x00007f1a6f4dcf10 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#28 0x00007f1a6e9bdd1b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#29 0x00007f1a6e9bfd5b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#30 0x00007f1a6ea15c83 in ?? () from /usr/lib/libQt5Core.so.5
#31 0x00007f1a68dfa71d in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#32 0x00007f1a68dfaa08 in ?? () from /usr/lib/libglib-2.0.so.0
#33 0x00007f1a68dfaabc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#34 0x00007f1a6ea16077 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#35 0x00007f1a6e9bb7b2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#36 0x00007f1a6e9c318c in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#37 0x000000000043e25d in main ()

Possible duplicates by query: bug 339788.

Reported using DrKonqi