gnome-tweak-tool crashed with GError in function(): Configuration server couldn't be contacted: D-BUS error: Method "Set" with signature "s(is)" on interface "org.gnome.GConf.Database" doesn't exist

[karadam]

when i opened it s crashed

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: gnome-tweak-tool 3.1.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-9.12-generic 3.0.3
Uname: Linux 3.0.0-9-generic x86_64
NonfreeKernelModules: wl nvidia
Architecture: amd64
Date: Tue Aug 23 13:18:12 2011
ExecutablePath: /usr/bin/gnome-tweak-tool
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: python /usr/bin/gnome-tweak-tool
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/gnome-tweak-tool']
SourcePackage: gnome-tweak-tool
Title: gnome-tweak-tool crashed with GError in function(): Configuration server couldn't be contacted: D-BUS error: Method "Set" with signature "s(is)" on interface "org.gnome.GConf.Database" doesn't exist
UpgradeStatus: Upgraded to oneiric on 2011-08-23 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare