jockey-gtk crashed with SystemError in run()

tried to install nvidia driver.
To do that, I uninstalled the driver from nvidia.com, reinstalled xserver-xorg-core libgl1-mesa-glx and then installed the 177 Version via System->Preferences->Hardware but I got multiple errors

right after this bug bug #269473 occured

ProblemType: Crash
Architecture: amd64
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/jockey-gtk
InterpreterPath: /usr/bin/python2.5
Package: jockey-gtk 0.4.1+r360-0ubuntu1
PackageArchitecture: all
ProcAttrCurrent: unconfined
ProcCmdline: /usr/bin/python /usr/bin/jockey-gtk
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/jockey-gtk']
SourcePackage: jockey
Title: jockey-gtk crashed with SystemError in run()
Uname: Linux 2.6.27-3-generic x86_64
UserGroups: adm admin audio cdrom dialout dip floppy fuse lpadmin plugdev sambashare video