Dynamic content not loading

The dynamic content wasn't loading (except for the local tasks menu), but I fixed it by editing dynamicload_js(). Sorry I'm not very good at creating patches, so here's the code based on today's version of HEAD:

function dynamicload_js() {
  if (isset($_POST['href'])) {
    $response = module_invoke('pagearray', 'page', $_POST['href']);
    if ($response['status'] === FALSE) {
      switch ($response['value']) {
        case MENU_NOT_FOUND:
        case NULL:
          $result = array(
            'result' => FALSE,
            'message' => t('Item was not found.'),
          );
          break;
        case MENU_ACCESS_DENIED:
          $result = array(
            'result' => FALSE,
            'message' => t('Access denied.'),
          );
          break;
        case MENU_SITE_OFFLINE:
          $result = array(
            'result' => FALSE,
            'message' => t('Site offline.'),
          );
          break;
      }
    }
    else {
      $page = $response['page'];
      $extra = '<h1>'. $page['title'] .'</h1>';

      // Only add breadcrumbs, tabs, help, and status messages if we're not rendering into a block (e.g. if we're in the main content area).
      if (strpos($target, 'block-') === FALSE) {
        $extra = $page['breadcrumb'] . $extra;
        if ($tabs = theme('menu_local_tasks')) {
         $extra .= $tabs;
        }
        $extra .= $page['help'];
        $extra .= theme('status_messages');
      }
      $result = array(
        'result' => TRUE,
        'content' => $extra . $page['content'],
      );
    }
  }
  else {
    $result = array(
      'result' => FALSE,
      'message' => t('No request found.'),
    );
  }
  print drupal_to_js($result);
  exit();
}

I added $page = $response['page']; and changed
$response['content'] to $page['content']