metacity crashes when compositing_manager is disabled

[seanh]

First enable metacity instead of compiz by setting visual effects to None in Appearances. Then run gconf-editor, go to apps->metacity->general, enable compositing_manager, then disable compositing_manager, metacity appears to crash. A ctrl-alt-backspace is required.

ProblemType: Crash
Architecture: i386
Date: Thu Apr 10 13:32:38 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=/home/username/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_GB.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 i686
UserGroups: adm admin audio cdrom dialout dip floppy fuse lpadmin plugdev video