Application: kde4-window-decorator (0.0.1)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-19-generic x86_64
Distribution: Ubuntu lucid (development branch)

-- Information about the crash:
I've installed compiz-kde from ubuntu official repository, then I open a console and just enter compiz--replace and validate. Compiz start, but kde-window-decorator crash. I can't restart the app, and the bug reproduces every time.

The crash can be reproduced every time.

 -- Backtrace:
Application: KDE Window Decorator (kde4-window-decorator), signal: Segmentation fault
[KCrash Handler]
#5  0x00007f248b38ac5e in KDecorationUnstable::compositingActive (this=<value optimized out>) at ../../../kwin/lib/kdecoration.cpp:406
#6  0x00007f2475f65ebe in Aurorae::AuroraeClient::updateWindowShape (this=<value optimized out>) at ../../../../../kwin/clients/aurorae/src/aurorae.cpp:913
#7  0x00007f248b38faaf in KCommonDecoration::eventFilter (this=0x23e4270, o=0x2400b90, e=0x7ffff7202910) at ../../../kwin/lib/kcommondecoration.cpp:883
#8  0x00007f248bba8487 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x2400b90, event=0x7ffff7202910) at kernel/qcoreapplication.cpp:819
#9  0x00007f248c53d1fc in QApplicationPrivate::notify_helper (this=0x222c9a0, receiver=0x2400b90, e=0x7ffff7202910) at kernel/qapplication.cpp:4296
#10 0x00007f248c5436fb in QApplication::notify (this=0x222c8e0, receiver=0x2400b90, e=0x7ffff7202910) at kernel/qapplication.cpp:4183
#11 0x00007f2489d62526 in KApplication::notify (this=0x222c8e0, receiver=0x2400b90, event=0x7ffff7202910) at ../../kdeui/kernel/kapplication.cpp:302
#12 0x00007f248bba906c in QCoreApplication::notifyInternal (this=0x222c8e0, receiver=0x2400b90, event=0x7ffff7202910) at kernel/qcoreapplication.cpp:704
#13 0x00007f248c59219b in QCoreApplication::sendEvent (this=0x23e7600, recursive=false, disableUpdates=false) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#14 QWidgetPrivate::sendPendingMoveAndResizeEvents (this=0x23e7600, recursive=false, disableUpdates=false) at kernel/qwidget.cpp:7086
#15 0x00007f248c598563 in QWidgetPrivate::show_helper (this=0x23eed30) at kernel/qwidget.cpp:7137
#16 0x00007f248c59a80a in QWidget::setVisible (this=0x2400b90, visible=<value optimized out>) at kernel/qwidget.cpp:7418
#17 0x00000000004144fd in QWidget::show (this=0x23eed20, force=<value optimized out>) at /usr/include/qt4/QtGui/qwidget.h:485
#18 KWD::Window::resizeDecoration (this=0x23eed20, force=<value optimized out>) at ../../../kde/window-decorator-kde4/window.cpp:867
#19 0x0000000000418430 in Window (this=0x23eed20, parentId=<value optimized out>, clientId=<value optimized out>, frame=<value optimized out>, type=<value optimized out>, x=-148886416, y=0, w=1, h=1)
    at ../../../kde/window-decorator-kde4/window.cpp:152
#20 0x0000000000411ac2 in KWD::Decorator::enableDecorations (this=0x222c8e0, timestamp=<value optimized out>) at ../../../kde/window-decorator-kde4/decorator.cpp:212
#21 0x000000000040ac4b in main (argc=<value optimized out>, argv=<value optimized out>) at ../../../kde/window-decorator-kde4/main.cpp:113

Reported using DrKonqi