Missing Controller

Error: Principaing.htmController could not be found.

Error: Create the class Principaing.htmController below in file: app/controllers/principaing.htm_controller.php

<?php
class Principaing.htmController extends AppController {

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

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