[kh99]

At the end, instead of the eval(print_output(... line, try:

$templater = vB_Template::create('gallery2');
$templater->register_page_templates();
$templater->register('bodyHtml', $data['bodyHtml']);
print_output($templater->render());

and then in the gallery2 template, change $data[bodyHtml] to {vb:raw bodyHtml}