Suddenly unable to use Desktop Effects

Binary package hint: compiz

Currently running Gutsy Tribe-5 + updates on a Dell PC and Desktop Effects were working. Since applying updates today, desktop effects no longer work.
The following output is what I get when I run gnome-appearance-properties from gnome-terminal:
gavin@gavin-desktop:~$ gnome-appearance-properties
/bin/sh: /usr/bin/esd: not found
nvidia_new restricted driver is already enabled
Checking for Xgl: not present.
Detected PCI ID for VGA: 01:00.0 0300: 10de:014e (rev a2) (prog-if 00 [VGA])
Checking for texture_from_pixmap: present.
Checking for non power of two support: present.
Checking for Composite extension: present.
Comparing resolution (1280x1024) to maximum 3D texture size (512): Failed.
aborting and using fallback: /usr/bin/metacity
Window manager warning: "" found in configuration database is not a valid value for keybinding "toggle_shaded"

(gnome-appearance-properties:7449): GLib-CRITICAL **: g_array_free: assertion `array' failed
Window manager warning: "" found in configuration database is not a valid value for keybinding "toggle_shaded"