1.5.1 Can't get past Hello. Thank you for loading ... for Admin

New installation of 1.5.1. Thought everything was working. But now I can bet past the " Hello. Thank you for loading Zen Cart " screen for admin area (rather I rename the Admin folder or not). Shop appears to be working fine.

Seemed to have corresponded to the start of the SSL certificate.

From forum suggestions, checked/reloaded/double checked configure file. Don't think I missed anything. Tired going back through the installation process using "Upgrade Cfg Files"

Tried various combinations of SSL to 'false'. With and with out the www on the path. using https and http for the HTTP_SERVER.

  define('HTTP_SERVER', 'https://www.fablesbybarrie.com');
  define('HTTPS_SERVER', 'https://www.fablesbybarrie.com');
  define('HTTP_CATALOG_SERVER', 'https://www.fablesbybarrie.com');
  define('HTTPS_CATALOG_SERVER', 'https://www.fablesbybarrie.com');

  // secure webserver for admin?  Valid choices are 'true' or 'false' (including quotes).
  define('ENABLE_SSL_ADMIN', 'true');

  // secure webserver for storefront?  Valid choices are 'true' or 'false' (including quotes).
  define('ENABLE_SSL_CATALOG', 'true');
// NOTE: be sure to leave the trailing '/' at the end of these lines if you make changes!
// * DIR_WS_* = Webserver directories (virtual/URL)
  // these paths are relative to top of your webspace ... (ie: under the public_html or httpdocs folder)
  $t1 = parse_url(HTTP_SERVER);$p1 = $t1['path'];$t2 = parse_url(HTTPS_SERVER);$p2 = $t2['path'];
  
  define('DIR_WS_ADMIN', preg_replace('#^' . str_replace('-', '\-', $p1) . '#', '', dirname($_SERVER['SCRIPT_NAME'])) . '/');
  define('DIR_WS_CATALOG', '/');
  define('DIR_WS_HTTPS_ADMIN', preg_replace('#^' . str_replace('-', '\-', $p2) . '#', '', dirname($_SERVER['SCRIPT_NAME'])) . '/');
  define('DIR_WS_HTTPS_CATALOG', '/');

  define('DIR_WS_IMAGES', 'images/');
  define('DIR_WS_ICONS', DIR_WS_IMAGES . 'icons/');
  define('DIR_WS_CATALOG_IMAGES', HTTP_CATALOG_SERVER . DIR_WS_CATALOG . 'images/');
  define('DIR_WS_CATALOG_TEMPLATE', HTTP_CATALOG_SERVER . DIR_WS_CATALOG . 'includes/templates/');
  define('DIR_WS_INCLUDES', 'includes/');
  define('DIR_WS_FUNCTIONS', DIR_WS_INCLUDES . 'functions/');
  define('DIR_WS_CLASSES', DIR_WS_INCLUDES . 'classes/');
  define('DIR_WS_MODULES', DIR_WS_INCLUDES . 'modules/');
  define('DIR_WS_LANGUAGES', DIR_WS_INCLUDES . 'languages/');
  define('DIR_WS_CATALOG_LANGUAGES', HTTP_CATALOG_SERVER . DIR_WS_CATALOG . 'includes/languages/');

// * DIR_FS_* = Filesystem directories (local/physical)
  define('DIR_FS_ADMIN', realpath(dirname(__FILE__) . '/../') . '/');
  define('DIR_FS_CATALOG', '/');

  define('DIR_FS_CATALOG_LANGUAGES', DIR_FS_CATALOG . 'includes/languages/');
  define('DIR_FS_CATALOG_IMAGES', DIR_FS_CATALOG . 'images/');
  define('DIR_FS_CATALOG_MODULES', DIR_FS_CATALOG . 'includes/modules/');
  define('DIR_FS_CATALOG_TEMPLATES', DIR_FS_CATALOG . 'includes/templates/');
  define('DIR_FS_BACKUP', DIR_FS_ADMIN . 'backups/');
  define('DIR_FS_EMAIL_TEMPLATES', DIR_FS_CATALOG . 'email/');
  define('DIR_FS_DOWNLOAD', DIR_FS_CATALOG . 'download/');

Shop is working, so database connection information is correct.

Just can't find a solution to get into Admin. Any help/suggestion are greatly appreciated.

Your problem is this line, which has a clearly invalid path:

define('DIR_FS_CATALOG', '/');

Make it the same as DIR_FS_CATALOG in your non-admin configure.php file.

Thanks. That did it.
Really appreciate the help.