Smarty not working, Error 500?

Question

PHP

<?php
//соединение с бд
require_once "db.php";
//сессия
session_name("xlandcms");
session_start();
//подключаем функции
require_once 'fnc.php';
//подключаем классы
require_once 'class.php';
//подключаем конфиг

require_once 'config.php';
//подключаем smarty
define('SMARTY_TEMPLATE_LOAD','../../style/'.$setup['skin'].'/');
require_once '../smarty/Smarty.class.php';
echo 'Class';
$smarty = new Smarty();
echo 'Class';
$smarty->template_dir = SMARTY_TEMPLATE_LOAD.'templates/';
$smarty->compile_dir = SMARTY_TEMPLATE_LOAD.'templates_c/';
$smarty->config_dir = SMARTY_TEMPLATE_LOAD.'configs/';
$smarty->cache_dir = SMARTY_TEMPLATE_LOAD.'cache/';
$smarty->assign('home',$home);
$smarty->assign('message',$message);
$smarty->assign('user',$user);
$smarty->assign('id',$id);
$smarty->assign('setup',$setup);
$smarty->assign('realtime',$realtime);
$smarty->assign('start',$start);
$smarty->assign('admin',$admin);
?>

After the directive new Smarty(); there is an error 500.
Smarty with of. website, latest version available.
How to be? The issue is very hot, because before the 20th I have to add a new version of the site, based on the old one, and also to subordinate this moment, which occurs only on the new server.

Answer 1

error 500 occurs

You need to determine what exactly is wrong.
1. Turn on error
reporting php.net/manual/ru/function.error-reporting.php
2. See what's in the php and web server logs
3. Study:
www.smarty.net/docs/en/installing.smarty. basic.tpl
www.smarty.net/docs/en/installing.smarty.extended.tpl
4. Ideally (for the future), set up a debugger, such as xdebug, and step by step find what the error is.