jockey-gtk crashed with AttributeError in enabled()

[PY]

I just want to activate the nvidia drivers with the tool but he doesn't want to run and crash every time

ProblemType: Crash
Architecture: i386
Date: Fri Apr 11 13:08:49 2008
DistroRelease: Ubuntu 8.04
ExecutablePath: /usr/bin/jockey-gtk
InterpreterPath: /usr/bin/python2.5
Package: jockey-gtk 0.3.3-0ubuntu7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/jockey-gtk
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/jockey-gtk']
SourcePackage: jockey
Title: jockey-gtk crashed with AttributeError in enabled()
Uname: Linux 2.6.24-15-generic i686
UserGroups: