Program received signal SIGSEGV, Segmentation fault.
0x00007ffff434525c in QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::data (this=0x8)
    at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:135
135	        return d;
(gdb) bt
#0  0x00007ffff434525c in QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::data (this=0x8)
    at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:135
#1  0x00007ffff4adb263 in qGetPtrHelper<QScopedPointer<QObjectData> > (p=...) at ../../include/QtCore/../../src/corelib/global/qglobal.h:2455
#2  0x00007ffff4adb952 in QGraphicsScene::d_func (this=0x0) at graphicsview/qgraphicsscene.h:297
#3  0x00007ffff4afe7db in QGraphicsScene::removeItem (this=0x0, item=0x1a08810) at graphicsview/qgraphicsscene.cpp:2961
#4  0x00007ffff6003294 in WebCore::PageClientQGraphicsWidget::~PageClientQGraphicsWidget() ()
   from /usr/local/Trolltech/Qt-4.8.4/lib/libQtWebKit.so.4
#5  0x00007ffff6003320 in WebCore::PageClientQGraphicsWidget::~PageClientQGraphicsWidget() ()
   from /usr/local/Trolltech/Qt-4.8.4/lib/libQtWebKit.so.4
#6  0x00007ffff5fa8c16 in void WTF::deleteOwnedPtr<QWebPageClient>(QWebPageClient*) () from /usr/local/Trolltech/Qt-4.8.4/lib/libQtWebKit.so.4
#7  0x00007ffff5fa8afe in WTF::OwnPtr<QWebPageClient>::operator=(WTF::PassOwnPtr<QWebPageClient> const&) ()
   from /usr/local/Trolltech/Qt-4.8.4/lib/libQtWebKit.so.4
#8  0x00007ffff5fa674a in QGraphicsWebViewPrivate::detachCurrentPage() () from /usr/local/Trolltech/Qt-4.8.4/lib/libQtWebKit.so.4
#9  0x00007ffff5fa5576 in QGraphicsWebViewPrivate::~QGraphicsWebViewPrivate() () from /usr/local/Trolltech/Qt-4.8.4/lib/libQtWebKit.so.4
#10 0x00007ffff5fa55a8 in QGraphicsWebViewPrivate::~QGraphicsWebViewPrivate() () from /usr/local/Trolltech/Qt-4.8.4/lib/libQtWebKit.so.4
#11 0x00007ffff5fa5b65 in QGraphicsWebView::~QGraphicsWebView() () from /usr/local/Trolltech/Qt-4.8.4/lib/libQtWebKit.so.4
#12 0x00007ffff5fa5bd6 in QGraphicsWebView::~QGraphicsWebView() () from /usr/local/Trolltech/Qt-4.8.4/lib/libQtWebKit.so.4
#13 0x000000000040a91f in WebItem::~WebItem (this=0x190cae0, __in_chrg=<optimized out>) at webitem.cpp:25
#14 0x000000000040a9de in WebItem::~WebItem (this=0x190cae0, __in_chrg=<optimized out>) at webitem.cpp:27
#15 0x0000000000407877 in Stage::removeItem (this=0x7fffffffe0b0, id=1) at stage.cpp:142
#16 0x000000000040c124 in Dbus::unload (this=0x7f67f0, id=1) at dbus.cpp:53
#17 0x000000000040de53 in Dbus::qt_static_metacall (_o=0x7f67f0, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0x7fffffffd1e0)
    at moc_dbus.cpp:66
#18 0x000000000040dfc8 in Dbus::qt_metacall (this=0x7f67f0, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0x7fffffffd1e0) at moc_dbus.cpp:109
#19 0x00007ffff5479d6c in QDBusConnectionPrivate::deliverCall (this=0x14e3ec0, object=0x7f67f0, msg=..., metaTypes=..., slotIdx=6)
    at qdbusintegrator.cpp:951
#20 0x00007ffff54794a8 in QDBusConnectionPrivate::activateCall (this=0x14e3ec0, object=0x7f67f0, flags=273, msg=...)
    at qdbusintegrator.cpp:856
#21 0x00007ffff547d80c in QDBusConnectionPrivate::activateObject (this=0x14e3ec0, node=..., msg=..., pathStartPos=32)
    at qdbusintegrator.cpp:1427
#22 0x00007ffff547e16d in QDBusActivateObjectEvent::placeMetaCall (this=0x784060) at qdbusintegrator.cpp:1541
#23 0x00007ffff3d6632d in QObject::event (this=0x7fffffffe0b0, e=0x784060) at kernel/qobject.cpp:1194
#24 0x00007ffff4353726 in QApplicationPrivate::notify_helper (this=0x617920, receiver=0x7fffffffe0b0, e=0x784060)
    at kernel/qapplication.cpp:4562
#25 0x00007ffff4350d44 in QApplication::notify (this=0x7fffffffe110, receiver=0x7fffffffe0b0, e=0x784060) at kernel/qapplication.cpp:3944
#26 0x00007ffff3d4d1c6 in QCoreApplication::notifyInternal (this=0x7fffffffe110, receiver=0x7fffffffe0b0, event=0x784060)
    at kernel/qcoreapplication.cpp:946
#27 0x00007ffff5fa5469 in QCoreApplication::sendEvent(QObject*, QEvent*) () from /usr/local/Trolltech/Qt-4.8.4/lib/libQtWebKit.so.4
---Type <return> to continue, or q <return> to quit---
#28 0x00007ffff3d4e1da in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x617ad0)
    at kernel/qcoreapplication.cpp:1570
#29 0x00007ffff3d4ddfb in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1463
#30 0x00007ffff442056f in QCoreApplication::sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#31 0x00007ffff3d88f48 in postEventSourceDispatch (s=0x61ab40) at kernel/qeventdispatcher_glib.cpp:279
#32 0x00007ffff16a8d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007ffff16a90a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007ffff16a9164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007ffff3d897f7 in QEventDispatcherGlib::processEvents (this=0x6195f0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#36 0x00007ffff442c8c0 in QGuiEventDispatcherGlib::processEvents (this=0x6195f0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#37 0x00007ffff3d4a700 in QEventLoop::processEvents (this=0x7fffffffe040, flags=...) at kernel/qeventloop.cpp:149
#38 0x00007ffff3d4a88a in QEventLoop::exec (this=0x7fffffffe040, flags=...) at kernel/qeventloop.cpp:204
#39 0x00007ffff3d4d846 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#40 0x00007ffff435092e in QApplication::exec () at kernel/qapplication.cpp:3823
#41 0x000000000040b3e3 in main (argc=1, argv=0x7fffffffe268) at main.cpp:22