Mike, I don't know if /includes/extra_datafiles/ceon_uri_mapping_filenames.php is part of that older distribution, but here's its contents for v5.0
PHP Code:
<?php
/**
 * Ceon URI Mapping Product Type Info Page File Name Definitions.
 *
 * @package     ceon_uri_mapping
 * @author      Conor Kerr <[email protected]>
 * @copyright   Copyright 2008-2019 Ceon
 * @copyright   Copyright 2003-2019 Zen Cart Development Team
 * @copyright   Portions Copyright 2003 osCommerce
 * @link        http://ceon.net/software/business/zen-cart/uri-mapping
 * @license     http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
 * @version     $Id: ceon_uri_mapping_filenames.php 1027 2012-07-17 20:31:10Z conor $
 */

/**
 * Product type info pages which are missing their defines.
 */
if (!defined('FILENAME_DOCUMENT_GENERAL_INFO')) {
  
define('FILENAME_DOCUMENT_GENERAL_INFO''document_general_info');
}
if (!
defined('FILENAME_DOCUMENT_PRODUCT_INFO')) {
  
define('FILENAME_DOCUMENT_PRODUCT_INFO''document_product_info');
}
if (!
defined('FILENAME_EZPAGES_POPUP')) {
  
define('FILENAME_EZPAGES_POPUP''ezpages_popup');
}
if (!
defined('FILENAME_PRODUCT_BOOK_INFO')) {
  
define('FILENAME_PRODUCT_BOOK_INFO''product_book_info');
}
if (!
defined('FILENAME_PRODUCT_FREE_SHIPPING_INFO')) {
  
define('FILENAME_PRODUCT_FREE_SHIPPING_INFO''product_free_shipping_info');
}
if (!
defined('FILENAME_PRODUCT_MUSIC_INFO')) {
  
define('FILENAME_PRODUCT_MUSIC_INFO''product_music_info');
}