Search in includes/functions.php for
function un_htmlspecialchars($chars) {
//$chars = preg_replace("/(&#)([0-9]*)(;)/esiU", "chr(intval('\\2'))", $chars);
$chars = str_replace(">", ">", $chars);
$chars = str_replace("<", "<", $chars);
$chars = str_replace(""", "\"", $chars);
$chars = str_replace("&", "&", $chars);
return $chars;
}
and replace it with
if (!function_exists('un_htmlspecialchars')) {
function un_htmlspecialchars($chars) {
//$chars = preg_replace("/(&#)([0-9]*)(;)/esiU", "chr(intval('\\2'))", $chars);
$chars = str_replace(">", ">", $chars);
$chars = str_replace("<", "<", $chars);
$chars = str_replace(""", "\"", $chars);
$chars = str_replace("&", "&", $chars);
return $chars;
}
}