drupal_set_message not working on one specific template?

I have one specific template which drupal_set_message() does nothing on. The $messages are printed out in a header include which also exists on this template. I've triple checked that it's using the template I think it is, etc.

The only difference I can tell between this and any other page template I'm using is that this is a node-specific template. Specifically page-node-170.tpl.php.

Any开发者_开发问答one have any ideas?

Make sure that the custom template (page-node-170.tpl.php) has the following lines somewhere visible:

<?php if ($show_messages && $messages): print $messages; endif; ?>
<?php print $help; ?>