unexpected '{'

Hey guys and gals, have a quick question, have this error code popping up

Parse error: syntax error, unexpected '{' in /home/amate6/public_html/wtd/appinclude.php on line 16


Figured it meant that a { was open or closed, but I don't see anything that is, the ones that are there are open and closed.. Can someone take a look and point me in the right direction

<?php

require_once 'this.php';

//[todo: change the following url to your App API Key and APP Secret]
$appapikey = 'deleted';
$appsecret = 'deleted';

$facebook = new Facebook($appapikey, $appsecret);
$user = $facebook->require_login();

$appcallbackurl = 'http://www.site';
$appCanvasUrl = 'http://www.siteurl';


	try {
        if (!$facebook->api_client->users_isAppAdded()) {
            $facebook->redirect($facebook->get_add_url());
        }
    }
    catch (Exception $excatch) {
        $facebook->set_user(null, null);
        $facebook->redirect($appcallbackurl);
    }

Code (markup):

 

Did you check the this.php for errors

 

thanks for the reply, was just looking into that.. and noticed on a developer forum (the this.php is from the sites client library) which runs in php5 -- both my servers run PHP Version 4.4.7 so I am assuming that maybe the problem...

 

just to update, that was the problem.. it was running on 4.4.7 and when I switched over to php5 it worked..