software-center crashed with DBusException in call_blocking(): org.freedesktop.DBus.Error.ServiceUnknown: The name :1.131 was not provided by any .service files

After opend the software center, this error appeared

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: software-center 4.1.14
ProcVersionSignature: Ubuntu 3.0.0-8.11-generic 3.0.1
Uname: Linux 3.0.0-8-generic i686
NonfreeKernelModules: wl
Architecture: i386
Date: Tue Aug 16 20:03:54 2011
ExecutablePath: /usr/share/software-center/software-center
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110803.1)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/software-center']
SourcePackage: software-center
Title: software-center crashed with DBusException in call_blocking(): org.freedesktop.DBus.Error.ServiceUnknown: The name :1.131 was not provided by any .service files
UpgradeStatus: Upgraded to oneiric on 2011-08-16 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare