cakephp + cache + formhelper inside <cake:nocache></cake:nocache> = error

in all my views i have a login/register (cake)form.

my question: can i use the file cache engine with <cake:nocache>form</ cake:nocache>

1.) open url "www.domain.com/home"

2.) cachefile generated

3.) look perfect

4.) refresh (f5)

5.) error (when debug=1):

Parse error: parse error in C:\xampp\htdocs\cake_1.2.3.8166\app\tmp\cache\view \cake_1_2_3_8166_开发者_高级运维home.php on line 752 

cachefile -> line 752 -> </html>

cakephp: 1.2.3.8166

example:

<cake:nocache>
<?
$user = $session->read("user");
if(!$user){ //$user true or false
    echo "login:";
    echo $form->create('AdminUser', array('action' =>'login_load'));
    echo $form->input('email',array('label'=>false));
    echo $form->input('password',array('label'=>false));
    echo $form->submit('Login', array('id'=>'login'));
    echo $form->end();
}else{
    echo "hello user!";
}?>
</cake:nocache>   

it's a cakephp bug. cake google groups

The dev state at https://trac.cakephp.org/ticket/6034 CakePHP does not support using the form helper from within tags at this time.