Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.85 (KDE 4.2.85 (KDE 4.3 Beta1))
Qt Version: 4.5.0
Operating System: Linux 2.6.29-ARCH x86_64

What I was doing when the application crashed:
Upgraded to Kde 4.3 Beta 1 via [kdemod-unstable] on Arch. On restarting computer I get this error. I can still start applications via shortcut keys that I assigned but nothing else visible.

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[KCrash Handler]
#5  0x00007feaa76bc210 in QObject::setParent () from /usr/lib/libQtCore.so.4
#6  0x00007feaabb0e1d6 in Plasma::Containment::setWallpaper (this=0x1cdaf90, pluginName=@0x7fffb452b770, mode=@0x7fffb452b760)
    at /srv/build/kde43/kdelibs/src/kdelibs-4.2.85/plasma/containment.cpp:1456
#7  0x00007feaabb0e475 in Plasma::Containment::setDrawWallpaper (this=0x1cdaf90, drawWallpaper=<value optimized out>) at /srv/build/kde43/kdelibs/src/kdelibs-4.2.85/plasma/containment.cpp:1422
#8  0x00007feaabb0fdba in Plasma::Containment::init (this=0x1cdaf90) at /srv/build/kde43/kdelibs/src/kdelibs-4.2.85/plasma/containment.cpp:209
#9  0x00007feaabb1ab29 in Plasma::Corona::loadLayout (this=0x1c6e350, configName=<value optimized out>) at /srv/build/kde43/kdelibs/src/kdelibs-4.2.85/plasma/corona.cpp:367
#10 0x00007feaabb1b4b2 in Plasma::Corona::initializeLayout (this=0x1c6e350, configName=@0x7fffb452bcd0) at /srv/build/kde43/kdelibs/src/kdelibs-4.2.85/plasma/corona.cpp:323
#11 0x00007feaac0e3706 in PlasmaApp::corona () from /usr/lib/libkdeinit4_plasma-desktop.so
#12 0x00007feaac0e39be in PlasmaApp::setupDesktop () from /usr/lib/libkdeinit4_plasma-desktop.so
#13 0x00007feaac0e3b2b in PlasmaApp::qt_metacall () from /usr/lib/libkdeinit4_plasma-desktop.so
#14 0x00007feaa76c2b62 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#15 0x00007feaa76c7e9f in ?? () from /usr/lib/libQtCore.so.4
#16 0x00007feaa76bce43 in QObject::event () from /usr/lib/libQtCore.so.4
#17 0x00007feaa7db570d in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#18 0x00007feaa7dbd8fa in QApplication::notify () from /usr/lib/libQtGui.so.4
#19 0x00007feaaa6da606 in KApplication::notify (this=0x1b8f020, receiver=0x1c3b970, event=0x7fffb452c5f0) at /srv/build/kde43/kdelibs/src/kdelibs-4.2.85/kdeui/kernel/kapplication.cpp:307
#20 0x00007feaa76ad18c in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#21 0x00007feaa76da356 in ?? () from /usr/lib/libQtCore.so.4
#22 0x00007feaa76d687d in ?? () from /usr/lib/libQtCore.so.4
#23 0x00007feaa314801a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#24 0x00007feaa314b6e0 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#25 0x00007feaa314b87c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#26 0x00007feaa76d67df in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#27 0x00007feaa7e4c74f in ?? () from /usr/lib/libQtGui.so.4
#28 0x00007feaa76aba32 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#29 0x00007feaa76abdfd in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#30 0x00007feaa76ae0c4 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#31 0x00007feaac0cb05f in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#32 0x00007feaa687255d in __libc_start_main () from /lib/libc.so.6
#33 0x00000000004007f9 in _start ()