Missing Controller

Error: CnPromo.htmController could not be found.

Error: Create the class CnPromo.htmController below in file: app/controllers/cn_promo.htm_controller.php

<?php
class CnPromo.htmController extends AppController {

	var $name = 'CnPromo.htm';
}
?>

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