unity crashed with NameError in reset_unity_compiz_profile(): global name 'GError' is not defined

Binary package hint: unity

crashed when connecting to my ubuntu desktop.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: unity 3.8.10-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
CompizPlugins: [core,composite,opengl,mousepoll,expo,wall,unityshell]
CompositorRunning: None
DRM.card0.DVI.D.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1280x800 1024x768 800x600 640x480 720x400 640x400 640x350
 edid-base64:
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Wed Apr 20 13:38:40 2011
DistUpgraded: Log time: 2010-12-17 12:33:27.813978
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus: vboxhost, 4.0.4, 2.6.38-8-generic, i686: installed
ExecutablePath: /usr/bin/unity
GraphicsCard:
 nVidia Corporation G72M [GeForce Go 7400] [10de:01d8] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Sony Corporation Device [104d:81ef]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20101202)
InstallationMedia_: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20101202)
InstallationMedia__: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20101202)
InterpreterPath: /usr/bin/python2.7
MachineType: Sony Corporation VGN-FE31H
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdline: /usr/bin/python /usr/bin/unity --reset
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=fr_FR.utf8
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=6af38058-c7c3-4680-8f1b-9fedc3d89d2f ro quiet splash vt.handoff=7
ProcVersionSignature_: Ubuntu 2.6.38-8.42-generic 2.6.38.2
ProcVersionSignature__: Ubuntu 2.6.38-8.42-generic 2.6.38.2
PythonArgs: ['/usr/bin/unity', '--reset']
Renderer: Software
SourcePackage: unity
Title: unity crashed with NameError in reset_unity_compiz_profile(): global name 'GError' is not defined
UpgradeStatus: Upgraded to natty on 2011-02-24 (54 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XorgConf:

dmi.bios.date: 08/17/2006
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: R0170J3
dmi.board.asset.tag: N/A
dmi.board.name: VAIO
dmi.board.vendor: Sony Corporation
dmi.board.version: N/A
dmi.chassis.asset.tag: 7R2M000000003d0b2f3d48aa3a3f
dmi.chassis.type: 10
dmi.chassis.vendor: Sony Corporation
dmi.chassis.version: C3LMPW7F
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrR0170J3:bd08/17/2006:svnSonyCorporation:pnVGN-FE31H:pvrC3LMPW7F:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrC3LMPW7F:
dmi.product.name: VGN-FE31H
dmi.product.version: C3LMPW7F
dmi.sys.vendor: Sony Corporation
version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7