unity-2d-spread crashed when Settings schema 'org.gnome.desktop.background' is not installed

[Martin CABY]

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ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity-2d-spread 4.4.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-9.15-generic 3.0.3
Uname: Linux 3.0.0-9-generic i686
Architecture: i386
Date: Sat Sep 3 16:01:15 2011
ExecutablePath: /usr/bin/unity-2d-spread
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
ProcCmdline: /usr/bin/unity-2d-spread
Signal: 6
SourcePackage: unity-2d
StacktraceTop:
 __kernel_vsyscall ()
 raise () from /lib/i386-linux-gnu/libc.so.6
 abort () from /lib/i386-linux-gnu/libc.so.6
 ?? () from /usr/lib/libunity-2d-private.so.0
 qt_message_output(QtMsgType, char const*) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
Title: unity-2d-spread crashed with SIGABRT in __kernel_vsyscall()
UpgradeStatus: Upgraded to oneiric on 2011-08-28 (5 days ago)
UserGroups: adm admin audio cdrom dialout dip fax floppy fuse lpadmin netdev plugdev sambashare tape video

[Apport retracing service (apport)]

StacktraceTop:
 Unity2dDebug::unity2dQtHandler (type=QtFatalMsg, message=0x8873f08 "Settings schema 'org.gnome.desktop.background' is not installed\n") at /build/buildd/unity-2d-4.4.0/libunity-2d-private/src/unity2ddebug.cpp:89
 qt_message_output (msgType=QtFatalMsg, buf=0x8873f08 "Settings schema 'org.gnome.desktop.background' is not installed\n") at global/qglobal.cpp:2231
 qt_message (msgType=QtFatalMsg, msg=0x6b59200 "Settings schema '%s' is not installed\n", ap=0xbfcc92b4 "\350=\207\b\004") at global/qglobal.cpp:2352
 qFatal (msg=0x6b59200 "Settings schema '%s' is not installed\n") at global/qglobal.cpp:2535
 QConfSchema::QConfSchema(QString const&) () from /tmp/tmpZJZO6M/usr/lib/libdconf-qt.so.0