Application: kmail (1.13.0)
KDE Platform Version: 4.4.00 (KDE 4.4.0)
Qt Version: 4.6.2
Operating System: Linux 2.6.30.10-105.2.23.fc11.i586 i686
Distribution (Platform): Fedora RPMs

-- Information about the crash:
KMail closes trying to open an attached video, appears the dialog asking to save or to open, but whatever I choose, KMail crashes

The crash can be reproduced every time.

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#6  QByteArray::constData (this=<value optimized out>) at /usr/include/QtCore/qbytearray.h:415
#7  QString (this=<value optimized out>) at /usr/include/QtCore/qstring.h:416
#8  KMMessagePart::fileName (this=<value optimized out>) at /usr/src/debug/kdepim-4.4.0/kmail/kmmsgpart.cpp:437
#9  0x00b2694b in KMSaveAttachmentsCommand::slotSaveAll (this=0x9553a70) at /usr/src/debug/kdepim-4.4.0/kmail/kmcommands.cpp:2535
#10 0x00b27451 in KMSaveAttachmentsCommand::qt_metacall (this=0x9553a70, _c=QMetaObject::InvokeMetaMethod, _id=13, _a=0xbfbe2cac)
    at /usr/src/debug/kdepim-4.4.0/i586-redhat-linux-gnu/kmail/kmcommands.moc:895
#11 0x0216a5ea in QMetaObject::metacall (object=0x9553a70, cl=3216911228, idx=13, argv=0xbfbe2cac) at kernel/qmetaobject.cpp:237
#12 0x02178da5 in QMetaObject::activate (sender=0x95e0090, m=0xf04aa4, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3293
#13 0x00b068f7 in KMLoadPartsCommand::partsRetrieved (this=0x95e0090) at /usr/src/debug/kdepim-4.4.0/i586-redhat-linux-gnu/kmail/kmcommands.moc:2152
#14 0x00b07d42 in KMLoadPartsCommand::execute (this=0x95e0090) at /usr/src/debug/kdepim-4.4.0/kmail/kmcommands.cpp:2874
#15 0x00b2840c in KMLoadPartsCommand::slotStart (this=0x95e0090) at /usr/src/debug/kdepim-4.4.0/kmail/kmcommands.cpp:2849
#16 0x00b16fbb in KMCommand::qt_metacall (this=0x95e0090, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbfbe2eac) at /usr/src/debug/kdepim-4.4.0/i586-redhat-linux-gnu/kmail/kmcommands.moc:92
#17 0x00b1737a in KMLoadPartsCommand::qt_metacall (this=0x95e0090, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbfbe2eac)
    at /usr/src/debug/kdepim-4.4.0/i586-redhat-linux-gnu/kmail/kmcommands.moc:2135
#18 0x0216a5ea in QMetaObject::metacall (object=0x95e0090, cl=3216911228, idx=8, argv=0xbfbe2eac) at kernel/qmetaobject.cpp:237
#19 0x02178da5 in QMetaObject::activate (sender=0x8f1ff98, m=0x2278608, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3293
#20 0x021808f7 in QSingleShotTimer::timeout (this=0x8f1ff98) at .moc/release-shared/qtimer.moc:82
#21 0x02180a0c in QSingleShotTimer::timerEvent (this=0x8f1ff98) at kernel/qtimer.cpp:308
#22 0x02175c04 in QObject::event (this=0x8f1ff98, e=0x9553a70) at kernel/qobject.cpp:1212
#23 0x04cd4c4c in QApplicationPrivate::notify_helper (this=0x8a996b8, receiver=0x8f1ff98, e=0xbfbe33e0) at kernel/qapplication.cpp:4300
#24 0x04cdb8ee in QApplication::notify (this=0xbfbe37ec, receiver=0x8f1ff98, e=0xbfbe33e0) at kernel/qapplication.cpp:3704
#25 0x0281423a in KApplication::notify (this=0xbfbe37ec, receiver=0x8f1ff98, event=0xbfbe33e0) at /usr/src/debug/kdelibs-4.4.0/kdeui/kernel/kapplication.cpp:302
#26 0x0216523b in QCoreApplication::notifyInternal (this=0xbfbe37ec, receiver=0x8f1ff98, event=0xbfbe33e0) at kernel/qcoreapplication.cpp:704
#27 0x021945fe in QCoreApplication::sendEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.h:215
#28 QTimerInfoList::activateTimers (event=<value optimized out>, receiver=<value optimized out>) at kernel/qeventdispatcher_unix.cpp:603
#29 0x02191234 in timerSourceDispatch (source=0x8aa2d80) at kernel/qeventdispatcher_glib.cpp:184
#30 0x048f5308 in g_main_dispatch (context=<value optimized out>) at gmain.c:1824
#31 IA__g_main_context_dispatch (context=<value optimized out>) at gmain.c:2377
#32 0x048f89e0 in g_main_context_iterate (context=0x8aa2490, block=<value optimized out>, dispatch=1, self=0x8a96690) at gmain.c:2455
#33 0x048f8b13 in IA__g_main_context_iteration (context=0x8aa2490, may_block=1) at gmain.c:2518
#34 0x02190f25 in QEventDispatcherGlib::processEvents (this=0x8a6e188, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:412
#35 0x04d92a85 in QGuiEventDispatcherGlib::processEvents (this=0x8a6e188, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:204
#36 0x02163849 in QEventLoop::processEvents (this=0xbfbe36a4, flags={i = 36}) at kernel/qeventloop.cpp:149
#37 0x02163c9a in QEventLoop::exec (this=0xbfbe36a4, flags={i = 0}) at kernel/qeventloop.cpp:201
#38 0x0216641f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#39 0x04cd4cf7 in QApplication::exec () at kernel/qapplication.cpp:3579
#40 0x0804aa3e in main (argc=3, argv=0xbfbe39b4) at /usr/src/debug/kdepim-4.4.0/kmail/main.cpp:156

Reported using DrKonqi