Linea21

in user/tpl_user.php (line 70) :

$todo_mail = 'add_user';
include_once('../user/mail_actions.php');
include_once('../mail/template.php');

// echo $todo_mail  displays 'add_user'

$todo_mail = 'add_user';
themeInclude('../user/mail_actions.php');
themeInclude('../mail/template.php');

// echo $todo_mail  displays  undefined index

solutions (??) :

include_once(themePath('../user/mail_actions.php'));