Не работает RSS

<?php
/******************************************************************************/
// //
// InstantCMS v1.10 //
// instantcms.ru/ //
// //
// written by InstantCMS Team, 2007-2012 //
// produced by InstantSoft, (www.instantsoft.ru) //
// //
// LICENSED BY GNU/GPL v2 //
// //
/******************************************************************************/

function rssfeed(){

$inCore = cmsCore::getInstance();
$inConf = cmsConfig::getInstance();

$cfg = $inCore->loadComponentConfig('rssfeed');

if(!$cfg['component_enabled']) { cmsCore::error404(); }

global $_LANG;

$do = cmsCore::request('do', 'str', 'rss');
$target = cmsCore::request('target', 'str', 'rss');
$item_id = cmsCore::request('item_id', 'str', 'all');

if(!$inCore->isComponentInstalled($target)) { cmsCore::error404(); }

if (!preg_match('/^([a-z0-9_\-]+)$/ui', $item_id)) { $item_id = 0; }

if ($item_id == 'all') { $item_id = 0; }

////////////////////// RSS /////////////////////////////////////////////////////////////////////////////////////////////////
if ($do=='rss'){

if (!file_exists(PATH.'/components/'.$target.'/prss.php')){ cmsCore::halt($_LANG['NOT_RSS_GENERATOR']); }

cmsCore::loadLanguage('components/'.$target);
cmsCore::includeFile('components/'.$target.'/prss.php');

$rssdata = call_user_func_array('rss_'.$target, array($item_id, $cfg));
if(!$rssdata){ cmsCore::halt($_LANG['NOT_RSS_GENERATOR']); }

$channel = $rssdata['channel'];
$items = $rssdata['items'];

if ($cfg['addsite']) { $channel['title'] .= ' :: '. $inConf->sitename; }
$channel['title'] = trim(htmlspecialchars(strip_tags($channel['title'])));

header('Content-Type: application/rss+xml; charset=utf-8');


$rss= '<?xml version="1.0" encoding="utf-8"?>' ."\n";
$rss .= '<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">' ."\n";
$rss .= '<channel>' ."\n";
// Канал
$rss .= '<title>'.$channel['title'].'</title>' ."\n";
$rss .= '<link>'.$channel['link'].'</link>' ."\n";
$rss .= '<description><![CDATA['.trim(htmlspecialchars(strip_tags($channel['description']))).']]></description>' ."\n";

if ($cfg['icon_on']){
$rss .= '<image>'."\n";
$rss .= '<title>'.$channel['title'].'</title>'."\n";
$rss .= '<url>'.$cfg['icon_url'].'</url>'."\n";
$rss .= '<link>'.$channel['link'].'</link>'."\n";
$rss .= '</image>'."\n";
}

// Содержимое канала
if (is_array($items) && $items){
foreach ($items as $key=>$item){
$rss .= '<item>' ."\n";
$rss .= '<title>'.trim(htmlspecialchars(strip_tags($item['title']))).'</title>' ."\n";
$rss .= '<pubDate>'.date('r', strtotime($item['pubdate'])+($inConf->timediff*3600)).'</pubDate>' ."\n";
$rss .= '<guid>'.$item['link'].'</guid>' ."\n";
$rss .= '<link>'.$item['link'].'</link>' ."\n";
if (@$item['description']){
$rss .= '<description><![CDATA['.$item['description'].']]></description>' ."\n";
}
$rss .= '<category>'.$item['category'].'</category>' ."\n";
$rss .= '<comments>'.$item['comments'].'</comments>' ."\n";
if (@$item['image']){
$rss .= '<enclosure url="'.$item['image'].'" length="'.$item['size'].'" type="image/jpeg" />' ."\n";
}
$rss .= '</item>' ."\n";
}
}
$rss .= '</channel>' ."\n";
$rss .= '</rss>';

cmsCore::halt($rss);

}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

$inCore->executePluginRoute($do);

}

?>