Missing Controller

Error: Usergroup2010Controller could not be found.

Error: Create the class Usergroup2010Controller below in file: app/controllers/usergroup2010_controller.php

<?php
class Usergroup2010Controller extends AppController {

	var $name = 'Usergroup2010';
}
?>

Notice: If you want to customize this error message, create app/views/errors/missing_controller.ctp