Missing Controller

Error: Optimala70dController could not be found.

Error: Create the class Optimala70dController below in file: app/controllers/optimala70d_controller.php

<?php
class Optimala70dController extends AppController {

	var $name = 'Optimala70d';
}
?>

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