Missing Controller

Error: Impressum.de.6Controller could not be found.

Error: Create the class Impressum.de.6Controller below in file: app/controllers/impressum.de.6_controller.php

<?php
class Impressum.de.6Controller extends AppController {

	var $name = 'Impressum.de.6';
}
?>

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