jockey-gtk crashed with AttributeError in enabled()

[Sofa]

On latest Hardy 64bit, this occurs when inserting a new Graphics Adapter (Nvidia 8800 GS) and trying to enable Desktop Effects.
Usually I expected an "You need the Nvidia Binaries" Message here...

ProblemType: Crash
Architecture: amd64
Date: Fri Apr 11 16:01:20 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 --check-composite
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/jockey-gtk', '--check-composite']
SourcePackage: jockey
Title: jockey-gtk crashed with AttributeError in enabled()
Uname: Linux 2.6.24-15-generic x86_64
UserGroups: adm admin audio cdrom dialout dip floppy fuse lpadmin plugdev vboxusers video