[kh99]

I think you need to add a line to register threadinfo to your template, like:

$tpl = vB_Template::create('mytemplate');
$tpl->register('threadinfo', $threadinfo);
$template_hook['footer_test_hook'] = htmlentities($tpl->render());

And that will only work if $threadinfo is available at that hook, which I'm not sure of offhand (I guess if you had it working directly in the footer template, then it probably is).

Also, I don't think you need the call to htmlentities().