Version:            (using Devel)
Installed from:    Compiled sources

I loaded the kate session applet which could not be set up due to an invalid applet description. If I close this applet plasma crashs. Back tracke below:

--------------------------------------------------------
Application: Plasma Workspace (plasma), signal SIGABRT
[Thread debugging using libthread_db enabled]
[New Thread 0xb55de720 (LWP 7115)]
[New Thread 0xb1a8bb90 (LWP 7118)]
[New Thread 0xb2f48b90 (LWP 7117)]
[New Thread 0xb3b33b90 (LWP 7116)]
[KCrash handler]
#6  0xffffe410 in __kernel_vsyscall ()
#7  0xb7dfe005 in raise () from /lib/i686/cmov/libc.so.6
#8  0xb7dff981 in abort () from /lib/i686/cmov/libc.so.6
#9  0xb6a54818 in __gnu_cxx::__verbose_terminate_handler ()
   from /usr/lib/libstdc++.so.6
#10 0xb6a526d5 in ?? () from /usr/lib/libstdc++.so.6
#11 0xb6a52712 in std::terminate () from /usr/lib/libstdc++.so.6
#12 0xb6a533b5 in __cxa_pure_virtual () from /usr/lib/libstdc++.so.6
#13 0xb712b339 in QGraphicsItem::sceneBoundingRect (this=0x83f7e88)
    at graphicsview/qgraphicsitem.cpp:2559
#14 0xb714eca0 in QGraphicsScenePrivate::estimateItemsInRect (this=0x810aff0, 
    rect=@0xbfe68c48) at graphicsview/qgraphicsscene.cpp:351
#15 0xb715f7e1 in QGraphicsViewPrivate::itemsInArea (this=0x8138eb0, 
    path=@0xbfe68d80, mode=Qt::IntersectsItemShape)
    at graphicsview/qgraphicsview.cpp:1696
#16 0xb715ffb7 in QGraphicsView::items (this=0x81ac078, pos=@0xbfe68ee4)
    at graphicsview/qgraphicsview.cpp:1755
#17 0xb71600f2 in QGraphicsView::itemAt (this=0x6, pos=@0xbfe68ee4)
    at graphicsview/qgraphicsview.cpp:1862
#18 0xb71288de in QGraphicsItem::unsetCursor (this=0x83f8390)
    at graphicsview/qgraphicsitem.cpp:1325
#19 0xb717bbd5 in QGraphicsProxyWidgetPrivate::setWidget_helper (
    this=0x8346a70, newWidget=0x0, autoShow=true)
    at graphicsview/qgraphicsproxywidget.cpp:565
#20 0xb717c153 in QGraphicsProxyWidget::setWidget (this=0x83f8388, widget=0x0)
    at graphicsview/qgraphicsproxywidget.cpp:550
#21 0xb717c1d6 in ~QGraphicsProxyWidget (this=0x83f8388)
    at graphicsview/qgraphicsproxywidget.cpp:519
#22 0xb7131464 in ~QGraphicsItem (this=0x83f7e88)
    at graphicsview/qgraphicsitem.cpp:795
#23 0xb7169fff in ~QGraphicsWidget (this=0x83f7e80)
    at graphicsview/qgraphicswidget.cpp:219
#24 0xb7cdc7a0 in ~Applet (this=0x83f7e80)
    at /tmp/buildd/kdebase-workspace-4.0.72/libs/plasma/applet.cpp:408
#25 0xb74c199c in qDeleteInEventHandler (o=0x6) at kernel/qobject.cpp:3595
#26 0xb74c390c in QObject::event (this=0x83f7e80, e=0x83ae040)
    at kernel/qobject.cpp:1124
#27 0xb716c3bf in QGraphicsWidget::event (this=0x83f7e80, event=0x83ae040)
    at graphicsview/qgraphicswidget.cpp:1229
#28 0xb6bbfe6c in QApplicationPrivate::notify_helper (this=0x8077a00, 
    receiver=0x83f7e80, e=0x83ae040) at kernel/qapplication.cpp:3766
#29 0xb6bc4a09 in QApplication::notify (this=0x805a670, receiver=0x83f7e80, 
    e=0x83ae040) at kernel/qapplication.cpp:3360
#30 0xb7ae5a4d in KApplication::notify (this=0x805a670, receiver=0x83f7e80, 
    event=0x83ae040)
    at /tmp/buildd/kde4libs-4.0.72/kdeui/kernel/kapplication.cpp:311
#31 0xb74b31e9 in QCoreApplication::notifyInternal (this=0x805a670, 
    receiver=0x83f7e80, event=0x83ae040) at kernel/qcoreapplication.cpp:587
#32 0xb74b4599 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, 
    event_type=0, data=0x804b430)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#33 0xb74b47bd in QCoreApplication::sendPostedEvents (receiver=0x0, 
    event_type=0) at kernel/qcoreapplication.cpp:1091
#34 0xb74de5df in postEventSourceDispatch (s=0x8079ac8)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#35 0xb5a20978 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#36 0xb5a23bce in ?? () from /usr/lib/libglib-2.0.so.0
#37 0x08079a40 in ?? ()
#38 0x00000000 in ?? ()
#0  0xffffe410 in __kernel_vsyscall ()
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