Application: kmymoney (4.5.3)
KDE Platform Version: 4.6.3 (4.6.3)
Qt Version: 4.7.3
Operating System: Linux 2.6.39-1.slh.5-aptosid-686 i686
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
I had KMyMoney open and working (data saved in file, not in database). 
AqBanking-Plugin had been activated in previous session ("Settings - configure KMyMoney"). 
Today I wanted to configure AqBanking ("Settings - configure AqBanking"). So, in the tab "users", I chose "add new user".
This last step predictably crashes KMyMoney (I did not define an account in the AqBanking setup yet - but even if this were required before, this must not cause a crash...)

The crash can be reproduced every time.

-- Backtrace:
Application: KMyMoney (kmymoney), signal: Aborted
[KCrash Handler]
#7  0xb781e424 in __kernel_vsyscall ()
#8  0xb52b6911 in raise () from /lib/i386-linux-gnu/i686/cmov/libc.so.6
#9  0xb52b9d42 in abort () from /lib/i386-linux-gnu/i686/cmov/libc.so.6
#10 0xb52afb28 in __assert_fail () from /lib/i386-linux-gnu/i686/cmov/libc.so.6
#11 0xaf87588b in GWEN_List1_GetCount () from /usr/lib/libgwenhywfar.so.60
#12 0xaf9047dd in GWEN_Dialog_List_GetCount () from /usr/lib/libgwenhywfar.so.60
#13 0xaf809d1a in AB_SetupNewUserDialog_new () from /usr/lib/libaqbanking.so.33
#14 0xaf802852 in ?? () from /usr/lib/libaqbanking.so.33
#15 0xaf803bd8 in ?? () from /usr/lib/libaqbanking.so.33
#16 0xaf9059a6 in GWEN_Dialog_EmitSignal () from /usr/lib/libgwenhywfar.so.60
#17 0xaf93a131 in ?? () from /usr/lib/libgwengui-qt4.so.0
#18 0xaf93a501 in ?? () from /usr/lib/libgwengui-qt4.so.0
#19 0xb61d236d in metacall (object=0xa9fb5d0, cl=QMetaObject::InvokeMetaMethod, idx=36, argv=0xbfced608) at kernel/qmetaobject.cpp:237
#20 QMetaObject::metacall (object=0xa9fb5d0, cl=QMetaObject::InvokeMetaMethod, idx=36, argv=0xbfced608) at kernel/qmetaobject.cpp:232
#21 0xb61e1120 in QMetaObject::activate (sender=0xaa50a20, m=0xb5fd1728, local_signal_index=2, argv=0xbfced608) at kernel/qobject.cpp:3278
#22 0xb5d8db5d in QAbstractButton::clicked (this=0xaa50a20, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:206
#23 0xb5a8c2ad in QAbstractButtonPrivate::emitClicked (this=0xaa50a38) at widgets/qabstractbutton.cpp:546
#24 0xb5a8d90b in QAbstractButtonPrivate::click (this=0xaa50a38) at widgets/qabstractbutton.cpp:539
#25 0xb5a8dbc6 in QAbstractButton::mouseReleaseEvent (this=0xaa50a20, e=0xbfcedd98) at widgets/qabstractbutton.cpp:1121
#26 0xb56d757f in QWidget::event (this=0xaa50a20, event=0xbfcedd98) at kernel/qwidget.cpp:8259
#27 0xb5a8ce79 in QAbstractButton::event (this=0xaa50a20, e=0xbfcedd98) at widgets/qabstractbutton.cpp:1080
#28 0xb5b2f428 in QPushButton::event (this=0xaa50a20, e=0xbfcedd98) at widgets/qpushbutton.cpp:683
#29 0xb567d044 in notify_helper (this=0xa2e95b0, receiver=0xaa50a20, e=0xbfcedd98) at kernel/qapplication.cpp:4467
#30 QApplicationPrivate::notify_helper (this=0xa2e95b0, receiver=0xaa50a20, e=0xbfcedd98) at kernel/qapplication.cpp:4439
#31 0xb5682e5b in QApplication::notify (this=0xa2e95b0, receiver=0xaa50a20, e=0xbfcedd98) at kernel/qapplication.cpp:4028
#32 0xb6cb8cf1 in KApplication::notify (this=0xa2e5538, receiver=0xaa50a20, event=0xbfcedd98) at ../../kdeui/kernel/kapplication.cpp:311
#33 0xb61cbf7e in QCoreApplication::notifyInternal (this=0xa2e5538, receiver=0xaa50a20, event=0xbfcedd98) at kernel/qcoreapplication.cpp:731
#34 0xb567e000 in sendEvent (receiver=0xaa50a20, event=0xbfcedd98, alienWidget=0xaa50a20, nativeWidget=0xa9fb5d0, buttonDown=0xb5fe0ab4, lastMouseReceiver=..., spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#35 QApplicationPrivate::sendMouseEvent (receiver=0xaa50a20, event=0xbfcedd98, alienWidget=0xaa50a20, nativeWidget=0xa9fb5d0, buttonDown=0xb5fe0ab4, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3127
#36 0xb5707c8f in QETWidget::translateMouseEvent (this=0xa9fb5d0, event=0xbfcee170) at kernel/qapplication_x11.cpp:4461
#37 0xb5706c27 in QApplication::x11ProcessEvent (this=0xa2e5538, event=0xbfcee170) at kernel/qapplication_x11.cpp:3587
#38 0xb573252c in x11EventSourceDispatch (s=0xa2eabe8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#39 0xb48b7252 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#40 0xb48b7a30 in ?? () from /lib/libglib-2.0.so.0
#41 0xb48b7ce4 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#42 0xb61fa2b7 in QEventDispatcherGlib::processEvents (this=0xa2c8220, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#43 0xb573214a in QGuiEventDispatcherGlib::processEvents (this=0xa2c8220, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#44 0xb61caf9d in QEventLoop::processEvents (this=0xbfcee490, flags=...) at kernel/qeventloop.cpp:149
#45 0xb61cb1e1 in QEventLoop::exec (this=0xbfcee490, flags=...) at kernel/qeventloop.cpp:201
#46 0xb5bb0959 in QDialog::exec (this=0xa9fb5d0) at dialogs/qdialog.cpp:552
#47 0xaf93ba2f in ?? () from /usr/lib/libgwengui-qt4.so.0
#48 0xaf93a710 in QT4_Gui::execDialog(GWEN_DIALOG*, unsigned int) () from /usr/lib/libgwengui-qt4.so.0
#49 0xaf945a88 in CppGuiLinker::ExecDialog(GWEN_GUI*, GWEN_DIALOG*, unsigned int) () from /usr/lib/libgwengui-qt4.so.0
#50 0xaf909d32 in GWEN_Gui_ExecDialog () from /usr/lib/libgwenhywfar.so.60
#51 0xaf95cedd in ?? () from /usr/lib/kde4/kmm_kbanking.so
#52 0xaf95d03b in ?? () from /usr/lib/kde4/kmm_kbanking.so
#53 0xb61d236d in metacall (object=0xa801998, cl=QMetaObject::InvokeMetaMethod, idx=5, argv=0xbfcee8d8) at kernel/qmetaobject.cpp:237
#54 QMetaObject::metacall (object=0xa801998, cl=QMetaObject::InvokeMetaMethod, idx=5, argv=0xbfcee8d8) at kernel/qmetaobject.cpp:232
#55 0xb61e1120 in QMetaObject::activate (sender=0xa848cf0, m=0xb5fbe658, local_signal_index=1, argv=0xbfcee8d8) at kernel/qobject.cpp:3278
#56 0xb5675dbd in QAction::triggered (this=0xa848cf0, _t1=false) at .moc/release-shared/moc_qaction.cpp:263
#57 0xb567605b in QAction::activate (this=0xa848cf0, event=QAction::Trigger) at kernel/qaction.cpp:1257
#58 0xb5b1b063 in QMenuPrivate::activateCausedStack (this=0xa450ea0, causedStack=..., action=0xa848cf0, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:993
#59 0xb5b2185f in QMenuPrivate::activateAction (this=0xa450ea0, action=0xa848cf0, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:1085
#60 0xb5b24505 in QMenu::mouseReleaseEvent (this=0xa450ad8, e=0xbfcef1c8) at widgets/qmenu.cpp:2306
#61 0xb6d9be3c in KMenu::mouseReleaseEvent (this=0xa450ad8, e=0xbfcef1c8) at ../../kdeui/widgets/kmenu.cpp:458
#62 0xb56d757f in QWidget::event (this=0xa450ad8, event=0xbfcef1c8) at kernel/qwidget.cpp:8259
#63 0xb5b22f8c in QMenu::event (this=0xa450ad8, e=0xbfcef1c8) at widgets/qmenu.cpp:2415
#64 0xb567d044 in notify_helper (this=0xa2e95b0, receiver=0xa450ad8, e=0xbfcef1c8) at kernel/qapplication.cpp:4467
#65 QApplicationPrivate::notify_helper (this=0xa2e95b0, receiver=0xa450ad8, e=0xbfcef1c8) at kernel/qapplication.cpp:4439
#66 0xb5682e5b in QApplication::notify (this=0xa2e95b0, receiver=0xa450ad8, e=0xbfcef1c8) at kernel/qapplication.cpp:4028
#67 0xb6cb8cf1 in KApplication::notify (this=0xa2e5538, receiver=0xa450ad8, event=0xbfcef1c8) at ../../kdeui/kernel/kapplication.cpp:311
#68 0xb61cbf7e in QCoreApplication::notifyInternal (this=0xa2e5538, receiver=0xa450ad8, event=0xbfcef1c8) at kernel/qcoreapplication.cpp:731
#69 0xb567e000 in sendEvent (receiver=0xa450ad8, event=0xbfcef1c8, alienWidget=0x0, nativeWidget=0xa450ad8, buttonDown=0xb5fe0ab4, lastMouseReceiver=..., spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#70 QApplicationPrivate::sendMouseEvent (receiver=0xa450ad8, event=0xbfcef1c8, alienWidget=0x0, nativeWidget=0xa450ad8, buttonDown=0xb5fe0ab4, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3127
#71 0xb570839d in QETWidget::translateMouseEvent (this=0xa450ad8, event=0xbfcef5a0) at kernel/qapplication_x11.cpp:4395
#72 0xb5706c27 in QApplication::x11ProcessEvent (this=0xa2e5538, event=0xbfcef5a0) at kernel/qapplication_x11.cpp:3587
#73 0xb573252c in x11EventSourceDispatch (s=0xa2eabe8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#74 0xb48b7252 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#75 0xb48b7a30 in ?? () from /lib/libglib-2.0.so.0
#76 0xb48b7ce4 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#77 0xb61fa2b7 in QEventDispatcherGlib::processEvents (this=0xa2c8220, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#78 0xb573214a in QGuiEventDispatcherGlib::processEvents (this=0xa2c8220, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#79 0xb61caf9d in QEventLoop::processEvents (this=0xbfcef8c4, flags=...) at kernel/qeventloop.cpp:149
#80 0xb61cb1e1 in QEventLoop::exec (this=0xbfcef8c4, flags=...) at kernel/qeventloop.cpp:201
#81 0xb61cf94a in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#82 0xb567aea4 in QApplication::exec () at kernel/qapplication.cpp:3741
#83 0x0808b587 in _start ()

Reported using DrKonqi