Missing Controller

Error: RwBetaController could not be found.

Error: Create the class RwBetaController below in file: app/controllers/rw_beta_controller.php

<?php
class RwBetaController extends AppController {

	var $name = 'RwBeta';
}
?>

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