CMS driven 404 page for Genesis Framework

gistfile1.txt

<?php
/**
 * Handles display of 404 page.
 *
 * This file requires the creation of a page with the slug 'page-not-found'
 */
function jb_page_404(){
  genesis_custom_loop( array('pagename' => 'page-not-found', 'posts_per_page' => 1 ) );
}

/* Remove default loop */
remove_action( 'genesis_loop', 'genesis_do_loop' );
add_action( 'genesis_loop', 'jb_page_404' );

genesis();

Unfortunately, this does not provide the Genesis 404 functionality if the page isn't created. That's what the other 60 lines were for. :)

I would opt to save the 60 lines of code and just make sure you create the "page-not-found"