Application: dragon (17.08.3)

Qt Version: 5.10.1
Frameworks Version: 5.46.0
Operating System: Linux 4.16.0-2-amd64 x86_64
Distribution: Debian GNU/Linux testing (buster)

-- Information about the crash:
Edited the source file in avidemux-qt, saved as a different file and tried 
Tryied to open the source file once -> no reaction.
Tryied to open the source file second time - > crush

-- Backtrace:
Application: Dragon Player (dragon), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fabb0a34840 (LWP 11367))]

Thread 3 (Thread 0x7fab95148700 (LWP 11369)):
#0  0x00007fababc6e094 in read () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007faba67b0960 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faba676bf27 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faba676c3e0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007faba676c54c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fabac9451bb in QEventDispatcherGlib::processEvents (this=0x7fab90000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007fabac8e8b6a in QEventLoop::exec (this=this@entry=0x7fab95147d30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#7  0x00007fabac6fe7ea in QThread::exec (this=this@entry=0x7fabacfdbd60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:522
#8  0x00007fabacd68df5 in QDBusConnectionManager::run (this=0x7fabacfdbd60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
#9  0x00007fabac703b4f in QThreadPrivate::start (arg=0x7fabacfdbd60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:376
#10 0x00007faba8f9a5aa in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#11 0x00007fababc7ccbf in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 2 (Thread 0x7fab9cc59700 (LWP 11368)):
#0  0x00007fababc725d9 in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007faba8b5f0f7 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007faba8b60d1a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fab9efcbb19 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fabac703b4f in QThreadPrivate::start (arg=0x556961b5ec00) at thread/qthread_unix.cpp:376
#5  0x00007faba8f9a5aa in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fababc7ccbf in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7fabb0a34840 (LWP 11367)):
[KCrash Handler]
#6  QWidgetPrivate::windowHandle (this=<optimized out>) at ../../include/QtWidgets/5.10.1/QtWidgets/private/../../../../../src/widgets/kernel/qwidget_p.h:1010
#7  QWidget::windowHandle (this=0x556961bd0cc0) at kernel/qwidget.cpp:2625
#8  0x00007fabafe58d02 in KJobWidgets::setWindow (job=0x556961fa4d50, widget=<optimized out>) at ./src/kjobwidgets.cpp:30
#9  0x00005569606284ed in Dragon::MainWindow::load (this=0x556961bd0cc0, url=...) at ./src/app/mainWindow.cpp:565
#10 0x000055696062dd8b in Dragon::MainWindow::open (this=0x556961bd0cc0, url=...) at ./src/app/mainWindow.cpp:521
#11 0x0000556960625839 in Dragon::PlayerApplication::newInstance (this=0x7ffd26976940, playDisc=<optimized out>, uris=...) at ./src/app/playerApplication.cpp:81
#12 0x0000556960626144 in Dragon::PlayerApplication::slotActivateRequested (this=0x7ffd26976940, arguments=..., workingDirectory=...) at ./src/app/playerApplication.cpp:54
#13 0x00007fabac91a2af in QtPrivate::QSlotObjectBase::call (a=0x7ffd26975f60, r=0x7ffd26976940, this=0x7fab90013030) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:378
#14 QMetaObject::activate (sender=sender@entry=0x7ffd26976960, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd26975f60) at kernel/qobject.cpp:3750
#15 0x00007fabac91a867 in QMetaObject::activate (sender=sender@entry=0x7ffd26976960, m=m@entry=0x7fabaf5b9d00 <KDBusService::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd26975f60) at kernel/qobject.cpp:3629
#16 0x00007fabaf3b4c17 in KDBusService::activateRequested (this=this@entry=0x7ffd26976960, _t1=..., _t2=...) at ./obj-x86_64-linux-gnu/src/KF5DBusAddons_autogen/EWIEGA46WW/moc_kdbusservice.cpp:196
#17 0x00007fabaf3af454 in KDBusService::CommandLine (this=0x7ffd26976960, arguments=..., workingDirectory=..., platform_data=...) at ./src/kdbusservice.cpp:239
#18 0x00007fabaf3b4a7d in KDBusServiceExtensionsAdaptor::CommandLine (platform_data=..., working_dir=..., arguments=..., this=this@entry=0x556961bd6bf0) at ./obj-x86_64-linux-gnu/src/kdbusserviceextensions_adaptor.cpp:39
#19 KDBusServiceExtensionsAdaptor::qt_static_metacall (_o=_o@entry=0x556961bd6bf0, _a=_a@entry=0x7ffd269760b0, _id=0, _c=QMetaObject::InvokeMetaMethod) at ./obj-x86_64-linux-gnu/src/kdbusserviceextensions_adaptor.moc:93
#20 0x00007fabaf3b4b97 in KDBusServiceExtensionsAdaptor::qt_static_metacall (_a=0x7ffd269760b0, _id=0, _c=QMetaObject::InvokeMetaMethod, _o=0x556961bd6bf0) at ./obj-x86_64-linux-gnu/src/kdbusserviceextensions_adaptor.moc:130
#21 KDBusServiceExtensionsAdaptor::qt_metacall (this=0x556961bd6bf0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7ffd269760b0) at ./obj-x86_64-linux-gnu/src/kdbusserviceextensions_adaptor.moc:126
#22 0x00007fabacd741a8 in QDBusConnectionPrivate::deliverCall (this=this@entry=0x7fab90004e80, object=object@entry=0x556961bd6bf0, msg=..., metaTypes=..., slotIdx=<optimized out>) at qdbusintegrator.cpp:998
#23 0x00007fabacd79160 in QDBusConnectionPrivate::activateCall (this=this@entry=0x7fab90004e80, object=0x556961bd6bf0, flags=flags@entry=273, msg=...) at qdbusintegrator.cpp:901
#24 0x00007fabacd79a1c in QDBusConnectionPrivate::activateCall (msg=..., flags=273, object=<optimized out>, this=0x7fab90004e80) at qdbusintegrator.cpp:850
#25 QDBusConnectionPrivate::activateObject (this=0x7fab90004e80, node=..., msg=..., pathStartPos=<optimized out>) at qdbusintegrator.cpp:1491
#26 0x00007fabacd7c13e in QDBusActivateObjectEvent::placeMetaCall (this=0x5569620d50a0) at qdbusintegrator.cpp:1611
#27 0x00007fabac91ad02 in QObject::event (this=0x7ffd26976960, e=<optimized out>) at kernel/qobject.cpp:1247
#28 0x00007fabad8d16cc in QApplicationPrivate::notify_helper (this=this@entry=0x556961b65520, receiver=receiver@entry=0x7ffd26976960, e=e@entry=0x5569620d50a0) at kernel/qapplication.cpp:3732
#29 0x00007fabad8d8e84 in QApplication::notify (this=0x7ffd26976940, receiver=0x7ffd26976960, e=0x5569620d50a0) at kernel/qapplication.cpp:3491
#30 0x00007fabac8ea938 in QCoreApplication::notifyInternal2 (receiver=0x7ffd26976960, event=event@entry=0x5569620d50a0) at kernel/qcoreapplication.cpp:1050
#31 0x00007fabac8ed4cd in QCoreApplication::sendEvent (event=0x5569620d50a0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#32 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x556961b656a0) at kernel/qcoreapplication.cpp:1740
#33 0x00007fabac8eda58 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1594
#34 0x00007fabac945b73 in postEventSourceDispatch (s=0x556961bbf1e0) at kernel/qeventdispatcher_glib.cpp:276
#35 0x00007faba676c287 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007faba676c4c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007faba676c54c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007fabac94519f in QEventDispatcherGlib::processEvents (this=0x556961ba6a50, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#39 0x00007fab9f0502c1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#40 0x00007fabac8e8b6a in QEventLoop::exec (this=this@entry=0x7ffd26976820, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#41 0x00007fabac8f1ed4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1338
#42 0x00005569606136be in main (argc=<optimized out>, argv=<optimized out>) at ./src/app/main.cpp:91

Reported using DrKonqi