Bug: Smarty produces PHP parse error

I get a parse error, when i use smarty. To reproduce, you can take the demo
(which comes with smarty) and add the following files:

-- debug.php
<?php

require '../libs/Smarty.class.php';

$smarty = new Smarty;

$smarty->compile_check = true;
$smarty->debugging = true;

$smarty->assign("array",array("Doe","Smith","Johnson","Case"));

$smarty->assign("j",1);

$smarty->display('debug.tpl');

?>

-- debug.tpl
{if $tree[$j] or $tree[$j-1]}
a
{/if}

-- error produced
Parse error: parse error in
/www/dev/sebastian/www/smarty/demo/templates_c/%%6B^6B7^6B774C3E%%debug.tpl.
php on line 3


Thanks for developping smarty as well as for fixing.
Sebastian Haller