[Plugin: WP MVC] [MVC] Warning: View "layouts" not found.

When I define a custom layout for the view, $this->render_main_view() generates this error:

[MVC] Warning: View "layouts" not found.
Thrown on line 204 of /home/content/d/c/p/dcpihosting/html/lsgs/wp-content/plugins/wp-mvc/core/controllers/mvc_controller.php 

Warning: require() [function.require]: Filename cannot be empty in /home/content/d/c/p/dcpihosting/html/lsgs/wp-content/plugins/wp-mvc/core/controllers/mvc_controller.php on line 265

Fatal error: require() [function.require]: Failed opening required '' (include_path='.:/usr/local/php5/lib/php') in /home/content/d/c/p/dcpihosting/html/lsgs/wp-content/plugins/wp-mvc/core/controllers/mvc_controller.php on line 265

My controller:

class EventsController extends MvcPublicController {
	public function index(){
		$this->render_view('show',array('layout'=>'layout-3'));
	}

	public function show() {
		//$this->set_object();
		$this->render_view('layouts',array('layout'=>'layout-2'));
	}
}

My layout pages simply call $this->render_main_view()

http://wordpress.org/extend/plugins/wp-mvc/