ERROR: FindTemplate: แก้ยังไงครับ ไฟล์ก็มีอยู่ที่เดียวกัน

<?php 
include_once("./include/class.rFastTemplate.php");
$url1="structure.html";
$url2="detail.html";
$url3="top.html";
$url4="left.html";
$url5="rigth.html";

$tpl = new rFastTemplate("template");
$tpl->define(array("main_tpl"=>$url1,"detail_tpl"=>$url2,"top_tpl"=>$url3,"left_tpl"=>$url4,"rigth_tpl"=>$url5));
$tpl->parse("##TOP##","top_tpl");
$tpl->parse("##DETAIL##","detail_tpl");
$tpl->parse("##LEFT##","left_tpl");
$tpl->parse("##RIGHT##","rigth_tpl");
$tpl->parse("MAIN","main_tpl");

$tpl->FastPrint();
exit();
?>