[kh99]

Hmm... I guess it would have been a good idea to leave the original code there, because now I can't remember what was there. But maybe something like this:

if ($type == 'thread')
{
   require_once(DIR . '/includes/class_taggablecontent.php');
   $checktags = vB_Taggable_Content_Item::split_tag_list($post['taglist']);
   if (!count($checktags))
      $errors[] = "At least one tag is required.";
}