ASSERT: "!item->d_ptr->itemDiscovered" in file /Users/torarne/dev/qt/4.7/src/gui/graphicsview/qgraphicsscenebsptreeindex.cpp, line 343

Program received signal SIGABRT, Aborted.
0x00007fff84ac33d6 in __kill ()
(gdb) bt
#0 0x00007fff84ac33d6 in __kill ()
#1 0x00007fff84b63972 in abort ()
#2 0x0000000106e5c91e in qt_message_output (msgType=QtFatalMsg, buf=0x114a80728 "ASSERT: \"!item->d_ptr->itemDiscovered\" in file /Users/torarne/dev/qt/4.7/src/gui/graphicsview/qgraphicsscenebsptreeindex.cpp, line 343") at /Users/torarne/dev/qt/4.7/src/corelib/global/qglobal.cpp:2259
#3 0x0000000106e5caf6 in qt_message (msgType=QtFatalMsg, msg=0x107051538 "ASSERT: \"%s\" in file %s, line %d", ap=0x7fff5fbf7260) at /Users/torarne/dev/qt/4.7/src/corelib/global/qglobal.cpp:2305
#4 0x0000000106e5cc0c in qFatal (msg=0x107051538 "ASSERT: \"%s\" in file %s, line %d") at /Users/torarne/dev/qt/4.7/src/corelib/global/qglobal.cpp:2488
#5 0x0000000106e5ceb8 in qt_assert (assertion=0x106432706 "!item->d_ptr->itemDiscovered", file=0x1064326b8 "/Users/torarne/dev/qt/4.7/src/gui/graphicsview/qgraphicsscenebsptreeindex.cpp", line=0x157) at /Users/torarne/dev/qt/4.7/src/corelib/global/qglobal.cpp:2004
#6 0x00000001061f617e in QGraphicsSceneBspTreeIndexPrivate::removeItem (this=0x114897ab0, item=0x114856a70, recursive=0x0, moveToUnindexedItems=0x1) at /Users/torarne/dev/qt/4.7/src/gui/graphicsview/qgraphicsscenebsptreeindex.cpp:343
#7 0x00000001061f6766 in QGraphicsSceneBspTreeIndex::prepareBoundingRectChange (this=0x114873a80, item=0x114856a70) at /Users/torarne/dev/qt/4.7/src/gui/graphicsview/qgraphicsscenebsptreeindex.cpp:519
#8 0x000000010619c2f4 in QGraphicsItem::prepareGeometryChange (this=0x114856a70) at /Users/torarne/dev/qt/4.7/src/gui/graphicsview/qgraphicsitem.cpp:7495
#9 0x00000001073e2f6f in QGraphicsVideoItemPrivate::updateRects (this=0x11488e9e0) at /Users/torarne/dev/mobility/src/multimedia/qgraphicsvideoitem.cpp:112
#10 0x00000001073e348f in QGraphicsVideoItemPrivate::_q_formatChanged (this=0x11488e9e0, format=@0x11489b778) at /Users/torarne/dev/mobility/src/multimedia/qgraphicsvideoitem.cpp:155
#11 0x00000001073e3566 in QGraphicsVideoItem::qt_metacall (this=0x114856a60, _c=QMetaObject::InvokeMetaMethod, _id=0x2, _a=0x7fff5fbf7890) at moc_qgraphicsvideoitem.cpp:103
#12 0x0000000106fa1302 in QMetaObject::metacall (object=0x114856a60, cl=QMetaObject::InvokeMetaMethod, idx=0x13, argv=0x7fff5fbf7890) at /Users/torarne/dev/qt/4.7/src/corelib/kernel/qmetaobject.cpp:237
#13 0x0000000106fb61f1 in QMetaObject::activate (sender=0x114883190, m=0x10743c500, local_signal_index=0x1, argv=0x7fff5fbf7890) at /Users/torarne/dev/qt/4.7/src/corelib/kernel/qobject.cpp:3272
#14 0x00000001073da393 in QAbstractVideoSurface::surfaceFormatChanged (this=0x114883190, _t1=@0x11489b778) at moc_qabstractvideosurface.cpp:131
#15 0x00000001073da63e in QAbstractVideoSurface::start (this=0x114883190, format=@0x7fff5fbf7990) at /Users/torarne/dev/mobility/src/multimedia/video/qabstractvideosurface.cpp:194
#16 0x00000001073af59c in QPainterVideoSurface::start (this=0x114883190, format=@0x7fff5fbf7990) at /Users/torarne/dev/mobility/src/multimedia/qpaintervideosurface.cpp:1357
#17 0x000000010923cb4a in QT7MovieViewRenderer::setupVideoOutput (this=0x11489b980) at /Users/torarne/dev/mobility/plugins/multimedia/qt7/qt7movieviewrenderer.mm:300
#18 0x000000010923ccd2 in QT7MovieViewRenderer::setSurface (this=0x11489b980, surface=0x114883190) at /Users/torarne/dev/mobility/plugins/multimedia/qt7/qt7movieviewrenderer.mm:340
#19 0x00000001073e25aa in QGraphicsVideoItem::paint (this=0x114856a60, painter=0x7fff5fbf9410, option=0x11486f908, widget=0x0) at /Users/torarne/dev/mobility/src/multimedia/qgraphicsvideoitem.cpp:395
#20 0x00000001061d2172 in QGraphicsScenePrivate::draw (this=0x11486f6e0, item=0x114856a70, painter=0x7fff5fbf9410, viewTransform=0x7fff5fbf80c0, transformPtr=0x7fff5fbf7ef0, exposedRegion=0x0, widget=0x0, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=0x0, drawItem=0x1) at /Users/torarne/dev/qt/4.7/src/gui/graphicsview/qgraphicsscene.cpp:4889
#21 0x00000001061d2dff in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x11486f6e0, item=0x114856a70, painter=0x7fff5fbf9410, viewTransform=0x7fff5fbf80c0, exposedRegion=0x0, widget=0x0, parentOpacity=1, effectTransform=0x0) at /Users/torarne/dev/qt/4.7/src/gui/graphicsview/qgraphicsscene.cpp:4813
#22 0x00000001061e1eb6 in QGraphicsScene::drawItems (this=0x11486f630, painter=0x7fff5fbf9410, numItems=0x2, items=0x114a7fe30, options=0x114a7f958, widget=0x0) at /Users/torarne/dev/qt/4.7/src/gui/graphicsview/qgraphicsscene.cpp:5296
#23 0x00000001061d6fc7 in QGraphicsScene::render (this=0x11486f630, painter=0x7fff5fbf9410, target=@0x7fff5fbf84e0, source=@0x7fff5fbf8480, aspectRatioMode=Qt::KeepAspectRatio) at /Users/torarne/dev/qt/4.7/src/gui/graphicsview/qgraphicsscene.cpp:1781
#24 0x0000000100e9792a in WebCore::MediaPlayerPrivate::paint (this=0x114719d10, context=0x7fff5fbf93c0, rect=@0x7fff5fbf85a0) at /Users/torarne/dev/webkit/mediaelement/WebCore/platform/graphics/qt/MediaPlayerPrivateQt.cpp:630