Thread 1 "standarddialogs" received signal SIGSEGV, Segmentation fault.
0x00007ffff78cc8d2 in QFileDialogPrivate::retranslateStrings() () from /usr/lib/libQt5Widgets.so.5
(gdb) backtrace
#0  0x00007ffff78cc8d2 in QFileDialogPrivate::retranslateStrings() () from /usr/lib/libQt5Widgets.so.5
#1  0x00007ffff78cf249 in QFileDialog::changeEvent(QEvent*) () from /usr/lib/libQt5Widgets.so.5
#2  0x00007ffff7719914 in QWidget::event(QEvent*) () from /usr/lib/libQt5Widgets.so.5
#3  0x00007ffff76d235c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#4  0x00007ffff76d9ad1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#5  0x00007ffff69f88e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#6  0x00007ffff7719959 in QWidget::event(QEvent*) () from /usr/lib/libQt5Widgets.so.5
#7  0x00007ffff76d235c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#8  0x00007ffff76d9ad1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#9  0x00007ffff69f88e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#10 0x00007ffff69fb06d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#11 0x00007ffff6a4ceb3 in ?? () from /usr/lib/libQt5Core.so.5
#12 0x00007ffff4096587 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#13 0x00007ffff40967f0 in ?? () from /usr/lib/libglib-2.0.so.0
#14 0x00007ffff409689c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#15 0x00007ffff6a4d2bf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#16 0x00007ffff69f6d3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#17 0x00007fffe39511ee in KJob::exec() () from /usr/lib/libKF5CoreAddons.so.5
#18 0x00007fffea39c7f5 in KFileWidget::KFileWidget(QUrl const&, QWidget*) () from /usr/lib/libKF5KIOFileWidgets.so.5
#19 0x00007fffea631c2b in ?? () from /usr/lib/qt/plugins/platformthemes/KDEPlasmaPlatformTheme.so
#20 0x00007fffea631fa2 in ?? () from /usr/lib/qt/plugins/platformthemes/KDEPlasmaPlatformTheme.so
#21 0x00007fffea6256ba in ?? () from /usr/lib/qt/plugins/platformthemes/KDEPlasmaPlatformTheme.so
#22 0x00007ffff78bf54f in QDialogPrivate::platformHelper() const () from /usr/lib/libQt5Widgets.so.5
#23 0x00007ffff78d1eeb in QFileDialogPrivate::init(QUrl const&, QString const&, QString const&) () from /usr/lib/libQt5Widgets.so.5
#24 0x00007ffff78d2346 in QFileDialog::QFileDialog(QFileDialogArgs const&) () from /usr/lib/libQt5Widgets.so.5
#25 0x00007ffff78d28cd in QFileDialog::getOpenFileUrls(QWidget*, QString const&, QUrl const&, QString const&, QString*, QFlags<QFileDialog::Option>, QStringList const&) ()
   from /usr/lib/libQt5Widgets.so.5
#26 0x00007ffff78d2b5f in QFileDialog::getOpenFileNames(QWidget*, QString const&, QString const&, QString const&, QString*, QFlags<QFileDialog::Option>) () from /usr/lib/libQt5Widgets.so.5
#27 0x00000000004099d9 in Dialog::setOpenFileNames() ()
#28 0x00007ffff6a240c9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#29 0x00007ffff77ba8c2 in QAbstractButton::clicked(bool) () from /usr/lib/libQt5Widgets.so.5
#30 0x00007ffff77bab14 in ?? () from /usr/lib/libQt5Widgets.so.5
#31 0x00007ffff77bbf07 in ?? () from /usr/lib/libQt5Widgets.so.5
#32 0x00007ffff77bc0e4 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libQt5Widgets.so.5
#33 0x00007ffff77199b8 in QWidget::event(QEvent*) () from /usr/lib/libQt5Widgets.so.5
#34 0x00007ffff76d235c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#35 0x00007ffff76da98d in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#36 0x00007ffff69f88e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#37 0x00007ffff76d903d in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/libQt5Widgets.so.5
#38 0x00007ffff77340b6 in ?? () from /usr/lib/libQt5Widgets.so.5