Version:           2.0 alpha-8 (using 4.00.83 (KDE 4.0.83 (KDE 4.1 Beta2),
compiled sources)
Compiler:          gcc-4.3
OS:                Linux (i686) release 2.6.25-2-486

KOffice rev. 822883

There is two parts on this report. Solving the first issue will probably solve
the second one :)

Testcase :

- New image,
- Select the Freehand tool,
- Draw something

=> The "Flake shapes" layer is created

Use the Undo function

=> What you draw is deleted _but_ the layer remains

Which leads to :

- Try manually deleting the extra layer

=> Crash

BT :

Application: Krita (krita), signal SIGSEGV
[Thread debugging using libthread_db enabled]
[New Thread 0xb381f740 (LWP 4706)]
[KCrash handler]
#6  0xb4caf24b in __dynamic_cast () from /usr/lib/libstdc++.so.6
#7  0xb7ead019 in KisShapeController::removeShape (this=0x859cfe8, 
    shape=0x8630ca8)
    at /media/kde/src/koffice/krita/ui/kis_shape_controller.cpp:146
#8  0xb7ead0d6 in KisShapeController::removeShape (this=0x859cfe8, 
    shape=0xa12b91c)
    at /media/kde/src/koffice/krita/ui/kis_shape_controller.cpp:149
#9  0xb7eaba6b in KisShapeController::slotNodeRemoved (this=0x859cfe8, 
    parent=0x8cc0190, index=1)
    at /media/kde/src/koffice/krita/ui/kis_shape_controller.cpp:350
#10 0xb7eada78 in KisShapeController::qt_metacall (this=0x859cfe8, 
    _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0xbfc96388)
    at /media/kde/build/koffice/krita/ui/kis_shape_controller.moc:73
#11 0xb6a7e86c in QMetaObject::activate (sender=0x8c93940, 
    from_signal_index=15, to_signal_index=15, argv=0xbfc96388)
    at kernel/qobject.cpp:3007
#12 0xb6a7ecf9 in QMetaObject::activate (sender=0x8c93940, m=0xb7cfba48, 
    local_signal_index=11, argv=0xbfc96388) at kernel/qobject.cpp:3080
#13 0xb7c5ec89 in KisImage::sigAboutToRemoveANode (this=0x8c93940, 
    _t1=0x8cc0190, _t2=1)
    at /media/kde/build/koffice/krita/image/kis_image.moc:198
#14 0xb7c5eccb in KisImage::aboutToRemoveANode (this=0x8c93940, 
    parent=0x8cc0190, index=1)
    at /media/kde/src/koffice/krita/image/kis_image.cc:187
#15 0xb7c74527 in KisNode::remove (this=0x8cc0190, index=1)
    at /media/kde/src/koffice/krita/image/kis_node.cpp:263
#16 0xb7c74660 in KisNode::remove (this=0x8cc0190, node={d = 0xbfc96460})
    at /media/kde/src/koffice/krita/image/kis_node.cpp:283
#17 0xb7c75d1d in KisNodeFacade::removeNode (this=0x8c93948, node=
      {d = 0xbfc964a4})
    at /media/kde/src/koffice/krita/image/kis_node_facade.cpp:121
#18 0xb7e62932 in KisLayerBox::slotRmClicked (this=0x8fcce88)
    at /media/kde/src/koffice/krita/ui/kis_layer_box.cpp:381
#19 0xb7e64748 in KisLayerBox::qt_metacall (this=0x8fcce88, 
    _c=QMetaObject::InvokeMetaMethod, _id=13, _a=0xbfc965ec)
    at /media/kde/build/koffice/krita/ui/kis_layer_box.moc:127
#20 0xb6a7e86c in QMetaObject::activate (sender=0x9087800, 
    from_signal_index=29, to_signal_index=30, argv=0xbfc965ec)
    at kernel/qobject.cpp:3007
#21 0xb6a7ea84 in QMetaObject::activate (sender=0x9087800, m=0xb62f75e4, 
    from_local_signal_index=2, to_local_signal_index=3, argv=0xbfc965ec)
    at kernel/qobject.cpp:3100
#22 0xb6219a70 in QAbstractButton::clicked (this=0x9087800, _t1=false)
    at .moc/debug-shared/moc_qabstractbutton.cpp:185
#23 0xb5f7c0ae in QAbstractButtonPrivate::emitClicked (this=0x91acd48)
    at widgets/qabstractbutton.cpp:543
#24 0xb5f7d296 in QAbstractButtonPrivate::click (this=0x91acd48)
    at widgets/qabstractbutton.cpp:536
#25 0xb5f7d542 in QAbstractButton::mouseReleaseEvent (this=0x9087800, 
    e=0xbfc96d94) at widgets/qabstractbutton.cpp:1112
#26 0xb605fc72 in QToolButton::mouseReleaseEvent (this=0x9087800, 
    e=0xbfc96d94) at widgets/qtoolbutton.cpp:675
#27 0xb5c6b3c4 in QWidget::event (this=0x9087800, event=0xbfc96d94)
    at kernel/qwidget.cpp:6927
#28 0xb5f7c049 in QAbstractButton::event (this=0x9087800, e=0xbfc96d94)
    at widgets/qabstractbutton.cpp:1074
#29 0xb605e722 in QToolButton::event (this=0x9087800, e=0xbfc96d94)
    at widgets/qtoolbutton.cpp:1105
#30 0xb5c0f269 in QApplicationPrivate::notify_helper (this=0x843ec38, 
    receiver=0x9087800, e=0xbfc96d94) at kernel/qapplication.cpp:3772
#31 0xb5c0fde7 in QApplication::notify (this=0xbfc97538, receiver=0x9087800, 
    e=0xbfc96d94) at kernel/qapplication.cpp:3501
#32 0xb70fe261 in KApplication::notify (this=0xbfc97538, receiver=0x9087800, 
    event=0xbfc96d94)
    at /media/kde/src/KDE/kdelibs/kdeui/kernel/kapplication.cpp:311
#33 0xb6a6a26b in QCoreApplication::notifyInternal (this=0xbfc97538, 
    receiver=0x9087800, event=0xbfc96d94) at kernel/qcoreapplication.cpp:583
#34 0xb76031c3 in QCoreApplication::sendSpontaneousEvent (receiver=0x9087800, 
    event=0xbfc96d94)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#35 0xb5c13bb0 in QApplicationPrivate::sendMouseEvent (receiver=0x9087800, 
    event=0xbfc96d94, alienWidget=0x9087800, nativeWidget=0x85b6e40, 
    buttonDown=0xb6304c20, lastMouseReceiver=@0xb6304c24)
    at kernel/qapplication.cpp:2766
#36 0xb5c897d2 in QETWidget::translateMouseEvent (this=0x85b6e40, 
    event=0xbfc97280) at kernel/qapplication_x11.cpp:4133
#37 0xb5c8a4f7 in QApplication::x11ProcessEvent (this=0xbfc97538, 
    event=0xbfc97280) at kernel/qapplication_x11.cpp:3133
#38 0xb5cb38de in x11EventSourceDispatch (s=0x8441be8, callback=0, 
    user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#39 0xb4903978 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#40 0xb4906bce in ?? () from /usr/lib/libglib-2.0.so.0
#41 0x08440e78 in ?? ()
#42 0x00000000 in ?? ()
#0  0xb7f7e430 in __kernel_vsyscall ()