Fixed MANTIS-5735 (Improper handling of missing field types)

    // Try creating an object factory as a last resort

    $path = 'hooks/systems/fields/' . filter_naughty($type);

    set_throw_errors(true);

    try {

        require_code($path);

        $ob = object_factory('Hook_fields_' . filter_naughty($type));

        if (is_object($ob)) {

            $fields_hook_cache[$type] = $ob;

            return $ob;

        }

    } catch (CMSException $e) {

        $ob = null;

    }

    set_throw_errors(false);

    // We got nothing; fall back to short_text

    if ($type == 'short_text') { // Uh oh! We already tried short_text.