Ситуация:
к модулю Your Account при регистрации пользователей привязана капча.По аналогии с FeedBack.
При установке NukeSentinel_2500_70-79 и при исправлении mainfile.php

if (defined('FORUM_ADMIN')) {
@require_once("../../../config.php");
@require_once("../../../db/db.php");
@require_once("../../../includes/sql_layer.php");
if (file_exists("../../../includes/custom_files/custom_mainfile.php")) { @include_once("../../../includes/custom_files/custom_mainfile.php"); }
@require_once("../../../includes/ipban.php");
if (defined('NUKE_HEADER') && file_exists("../../../includes/custom_files/custom_head.php")) { @include_once("../../../includes/custom_files/custom_head.php"); }
if (defined('NUKE_HEADER') && file_exists("../../../includes/custom_files/custom_header.php")) { @include_once("../../../includes/custom_files/custom_header.php"); }
} elseif (defined('INSIDE_MOD')) {
@require_once("../../config.php");
@require_once("../../db/db.php");
@require_once("../../includes/sql_layer.php");
if (file_exists("../../includes/custom_files/custom_mainfile.php")) { @include_once("../../includes/custom_files/custom_mainfile.php"); }
@require_once("../../includes/ipban.php");
if (defined('NUKE_HEADER') && file_exists("../../includes/custom_files/custom_head.php")) { @include_once("../../includes/custom_files/custom_head.php"); }
if (defined('NUKE_HEADER') && file_exists("../../includes/custom_files/custom_header.php")) { @include_once("../../includes/custom_files/custom_header.php"); }
} else {
@require_once("config.php");
@require_once("db/db.php");
@require_once("includes/sql_layer.php");
if (file_exists("includes/custom_files/custom_mainfile.php")) { @include_once("includes/custom_files/custom_mainfile.php"); }
@require_once("includes/ipban.php");
if (defined('NUKE_HEADER') && file_exists("includes/custom_files/custom_head.php")) { @include_once("includes/custom_files/custom_head.php"); }
if (defined('NUKE_HEADER') && file_exists("includes/custom_files/custom_header.php")) { @include_once("includes/custom_files/custom_header.php"); }
}

#
#-----[ CHANGE TO ]------------------------------------------
#
if (defined('FORUM_ADMIN')) {
@require_once("../../../config.php");
@require_once("../../../db/db.php");
@require_once("../../../includes/sql_layer.php");
if (file_exists("../../../includes/custom_files/custom_mainfile.php")) { @include_once("../../../includes/custom_files/custom_mainfile.php"); }
//@require_once("../../../includes/ipban.php");
@include_once("../../../includes/nukesentinel.php");
if (defined('NUKE_HEADER') && file_exists("../../../includes/custom_files/custom_head.php")) { @include_once("../../../includes/custom_files/custom_head.php"); }
if (defined('NUKE_HEADER') && file_exists("../../../includes/custom_files/custom_header.php")) { @include_once("../../../includes/custom_files/custom_header.php"); }
} elseif (defined('INSIDE_MOD')) {
@require_once("../../config.php");
@require_once("../../db/db.php");
@require_once("../../includes/sql_layer.php");
if (file_exists("../../includes/custom_files/custom_mainfile.php")) { @include_once("../../includes/custom_files/custom_mainfile.php"); }
//@require_once("../../includes/ipban.php");
@include_once("../../includes/nukesentinel.php");
if (defined('NUKE_HEADER') && file_exists("../../includes/custom_files/custom_head.php")) { @include_once("../../includes/custom_files/custom_head.php"); }
if (defined('NUKE_HEADER') && file_exists("../../includes/custom_files/custom_header.php")) { @include_once("../../includes/custom_files/custom_header.php"); }
} else {
@require_once("config.php");
@require_once("db/db.php");
@require_once("includes/sql_layer.php");
if (file_exists("includes/custom_files/custom_mainfile.php")) { @include_once("includes/custom_files/custom_mainfile.php"); }
//@require_once("includes/ipban.php");


//ПРОБЛЕМНАЯ СТРОКА!!!!!!!!!!!!!!!!!!!!!!!!!!

@include_once("includes/nukesentinel.php");

//ПРОБЛЕМНАЯ СТРОКА!!!!!!!!!!!!!!!!!!!!!!!!!!


if (defined('NUKE_HEADER') && file_exists("includes/custom_files/custom_head.php")) { @include_once("includes/custom_files/custom_head.php"); }
if (defined('NUKE_HEADER') && file_exists("includes/custom_files/custom_header.php")) { @include_once("includes/custom_files/custom_header.php"); }
}


перестает работать проверка капчи (сама капча видна, но при ее вводе выдается сообщение,что она введена неверно). Грешу на ПРОБЛЕМНУЮ СТРОКУ
так как при ее комментировании проблема пропадает, но не работает должным образом nukesentinel.
Подозрение на то , что перестает работать сессия капчи ибо функция $_SESSION['captcha_keystring'] выдает пустой результат.
Как исправить nukesentinel?