Zen-Cart Can not Run Admin

When visit zen-cart (V1.3.8a) amdin log in page, it shows: Fatal error: Class ‘notifier’ not found in /home/myhost/public_html/myshop/includes/autoload_func.php on line 79 modify configure.php under admin/includes define(‘DIR_FS_CATALOG’, ‘/home/myhost/myshop);  to   define(‘DIR_FS_CATALOG’, ‘/home/myhost/myshop/’); Always best to run zc_install to build the configure.php files on a new site. Saves all kinds of wasted time troubleshooting needlessly.