Comment 2 for bug 982362

Okay, I have re-checked that, and still not working.

Jono: The reason this is working for you is probably that you already
have the schema installed in your system! And because it does not get
packaged, it does not get removed when you uninstall the application.
Likely this file is left on your system from an older manual
installation. We would need that to be checked by someone who never
had the daemon installed.

To test the app's behavior when this file is not installed, try:
sudo rm /usr/share/glib-2.0/schemas/net.launchpad.accomplishments-viewer.gschema.xml
sudo glib-compile-schemas /usr/share/glib-2.0/schemas/