Missing Controller

Error: CardStock.htmlController could not be found.

Error: Create the class CardStock.htmlController below in file: app/controllers/card_stock.html_controller.php

<?php
class CardStock.htmlController extends AppController {

	var $name = 'CardStock.html';
}
?>

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