New region in node.tpl doesn't work in Tweme

Hello and firstly great Thanks for Tweme!

I can't add a region into node.tpl.php in tweme:

1. In tweme.info:
   regions[content_below] = Below node
2. In template.php:
   

   function _tweme_preprocess_node(&$vars) {
   if ($blocks = block_get_blocks_by_region('content_below')) {
     $vars['content_below'] = $blocks;
     $vars['content_below'] = $blocks;
     $vars['content_below']['#theme_wrappers'] = array('region');
     $vars['content_below']['#region'] = 'content_below';
     }
    }

3. In node.tpl.php:
   <?php print render($content_below); ?>
   (after such code:

   <?php
         // We hide the comments and links now so that we can render them later.
         hide($content['comments']);
         hide($content['links']);
         print render($content);
       ?>

So no errors, but also no region on any node page.

I tried adding
<?php print render($page['content_below']); ?>
and
<?php print render($content['content_below']); ?>

It works in two other themes.