Application: korganizer (4.4.1)
KDE Platform Version: 4.4.1 (KDE 4.4.1)
Qt Version: 4.6.2
Operating System: Linux 2.6.33-gentoo x86_64
Distribution (Platform): Gentoo Packages

-- Information about the crash:
Whenever I start the Korganizer, the main window pops up for a fraction of second and then crashes.

The crash can be reproduced every time.

 -- Backtrace:
Application: KOrganizer (korganizer), signal: Aborted
Traceback (most recent call last):
  File "/usr/share/gdb/auto-load/usr/lib64/libgobject-2.0.so.0.2200.4-gdb.py", line 9, in <module>
    from gobject import register
  File "/usr/share/glib-2.0/gdb/gobject.py", line 3, in <module>
    import gdb.backtrace
ImportError: No module named backtrace
The current source language is "auto; currently asm".
[KCrash Handler]
#5  0x00007ff017f56555 in raise () from /lib/libc.so.6
#6  0x00007ff017f57d60 in abort () from /lib/libc.so.6
#7  0x00007ff018cc20ce in qt_message_output (msgType=QtFatalMsg, buf=<value optimized out>) at global/qglobal.cpp:2250
#8  0x00007ff018cc2238 in qt_message (msgType=QtFatalMsg, msg=0x7ff018e17b70 "ASSERT: \"%s\" in file %s, line %d", ap=0x7fffc9ffbd80) at global/qglobal.cpp:2296
#9  0x00007ff018cc23cb in qFatal (msg=0x2da4 <Address 0x2da4 out of bounds>) at global/qglobal.cpp:2479
#10 0x00007ff019e2a0f7 in QGraphicsScenePrivate::_q_processDirtyItems (this=0x1116e10) at graphicsview/qgraphicsscene.cpp:475
#11 0x00007ff019e2a52f in QGraphicsScene::qt_metacall (this=0x1116c80, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x135b6c0) at .moc/debug-shared/moc_qgraphicsscene.cpp:130
#12 0x00007ff01e063cd7 in KOrg::MonthScene::qt_metacall (this=0x2da4, _c=11684, _id=6, _a=0xffffffffffffffff)
    at /var/tmp/portage/kde-base/korganizer-4.4.1/work/korganizer-4.4.1_build/korganizer/moc_monthscene.cpp:73
#13 0x00007ff018dc71fc in QObject::event (this=0x1116c80, e=0xe64e00) at kernel/qobject.cpp:1240
#14 0x00007ff019e246d0 in QGraphicsScene::event (this=0x1116c80, event=0xe64e00) at graphicsview/qgraphicsscene.cpp:3500
#15 0x00007ff019800871 in QApplicationPrivate::notify_helper (this=0xc75980, receiver=0x1116c80, e=0xe64e00) at kernel/qapplication.cpp:4300
#16 0x00007ff019807f6a in QApplication::notify (this=0x7fffc9ffcb30, receiver=0x1116c80, e=0xe64e00) at kernel/qapplication.cpp:4183
#17 0x00007ff01f624be2 in KApplication::notify (this=0x7fffc9ffcb30, receiver=0x1116c80, event=0xe64e00)
    at /var/tmp/portage/kde-base/kdelibs-4.4.1-r1/work/kdelibs-4.4.1/kdeui/kernel/kapplication.cpp:302
#18 0x00007ff018db7802 in QCoreApplication::notifyInternal (this=0x7fffc9ffcb30, receiver=0x1116c80, event=0xe64e00) at kernel/qcoreapplication.cpp:704
#19 0x00007ff018db857e in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0xc4b3e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0xc4b3e0) at kernel/qcoreapplication.cpp:1345
#21 0x00007ff018de05c3 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#22 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:276
#23 0x00007ff01463fbed in g_main_dispatch (context=0xc85df0) at gmain.c:1960
#24 IA__g_main_context_dispatch (context=0xc85df0) at gmain.c:2513
#25 0x00007ff014642eb9 in g_main_context_iterate (context=0xc85df0, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:2591
#26 0x00007ff014643018 in IA__g_main_context_iteration (context=0xc85df0, may_block=1) at gmain.c:2654
#27 0x00007ff018de025c in QEventDispatcherGlib::processEvents (this=0xc806b0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#28 0x00007ff0198aa68a in QGuiEventDispatcherGlib::processEvents (this=0x2da4, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x00007ff018db6332 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#30 0x00007ff018db6683 in QEventLoop::exec (this=0x7fffc9ffcae0, flags=) at kernel/qeventloop.cpp:201
#31 0x00007ff018db887f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#32 0x0000000000408df9 in main (argc=<value optimized out>, argv=<value optimized out>) at /var/tmp/portage/kde-base/korganizer-4.4.1/work/korganizer-4.4.1/korganizer/main.cpp:61

Reported using DrKonqi