Missing Controller

Error: Sls2011Controller could not be found.

Error: Create the class Sls2011Controller below in file: app/controllers/sls2011_controller.php

<?php
class Sls2011Controller extends AppController {

	var $name = 'Sls2011';
}
?>

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