Missing Controller

Error: ClientsIndex.htmController could not be found.

Error: Create the class ClientsIndex.htmController below in file: app/controllers/clients_index.htm_controller.php

<?php
class ClientsIndex.htmController extends AppController {

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

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