jockey-gtk crashed with AttributeError in __getattr__(): 'gi.repository.Gtk' object has no attribute 'ICON_LOOKUP_USE_BUILTIN'

[Stephan]

while live session of Ubuntu 11.04 alpha 1; while installing nvidea graphic card

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: jockey-gtk 0.8-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.37-12.26-generic 2.6.37
Uname: Linux 2.6.37-12-generic x86_64
Architecture: amd64
Date: Fri Jan 21 17:52:59 2011
ExecutablePath: /usr/bin/jockey-gtk
InterpreterPath: /usr/bin/python2.7
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110121)
MachineType: Acer Aspire 6935
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/jockey-gtk --check
ProcEnviron:
 LANGUAGE=de_DE.UTF-8:de:en_GB:en
 LANG=de_DE.UTF-8
 LC_MESSAGES=de_AT.utf8
 SHELL=/bin/bash
ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
PythonArgs: ['/usr/bin/jockey-gtk', '--check']
SourcePackage: jockey
Title: jockey-gtk crashed with AttributeError in __getattr__(): 'gi.repository.Gtk' object has no attribute 'ICON_LOOKUP_USE_BUILTIN'
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 03/16/2010
dmi.bios.vendor: Acer
dmi.bios.version: V1.20
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Aspire 6935
dmi.board.vendor: Acer
dmi.board.version: PSMBOU-1234567
dmi.chassis.type: 1
dmi.chassis.vendor: Acer
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAcer:bvrV1.20:bd03/16/2010:svnAcer:pnAspire6935:pvrV1.20:rvnAcer:rnAspire6935:rvrPSMBOU-1234567:cvnAcer:ct1:cvrN/A:
dmi.product.name: Aspire 6935
dmi.product.version: V1.20
dmi.sys.vendor: Acer

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #706193, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.