AssertionError in CPU Frequency Monitor:

[Angus Marenssi]

CPU Frcuency monitor applet crashes on startup

Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/awn/extras/awnlib.py", line 1391, in init_start
    applet_class(applet)
  File "/usr/share/avant-window-navigator/applets/cpufreq/cpufreq.py", line 126, in __init__
    self.setup_context_menu()
  File "/usr/share/avant-window-navigator/applets/cpufreq/cpufreq.py", line 190, in setup_context_menu
    self.initialize_backend(self.applet.settings["cpu_number"])
  File "/usr/share/avant-window-navigator/applets/cpufreq/cpufreq.py", line 146, in initialize_backend
    assert self.backend is not None
AssertionError

applet version: '0.4.1', awn extras version: 0.4.0+bzr1372-0ubuntu3

This package provides the core applets written in C:
 * awn-notification-daemon: Libnotify notification daemon implementation.
 * awn-system-monitor: Display CPU activity and system stats on click.
 * awnterm: A pop-up terminal that lives in AWN.
 * cairo_main_menu: Displays a list of all the applications on your
   computer in a standard menu format.
 * indicator: Display indicator applets.
 * related : Display information from zeitgeist.
 * notification-area : Replaces the gnome-panel notification area and shows
   it right on your dock
 * plugger: Displays mounted volumes and allows you to browse them.
 * shinyswitcher: A workspace switcher supporting compiz and other WMs.
 * showdesktop: Hides/shows all of the windows of the current viewport,
   similar to the showdesktop icon of gnome-panel.
 * garbage: A trash applet, like the one from gnome-panel.

System: Ubuntu 10.10 Maverick Meerkat running on MacBook Pro 7,1
awn installed via repository maverick/universe (packages.medibuntu.org)
GeForce 320M, NVIDIA UNIX x86_64 Kernel Module 260.19.06