UC Downpayment knocks out the attributes

Hi there,

This function knocks out the display of attributes in product description (cart, etc):

function uc_downpayment_product_description($product) {
  $description = array(
    'attributes' => array(
      '#product' => array(
        '#type' => 'value',
        '#value' => $product,
      ),
      '#theme' => 'uc_downpayment_product_description',
      '#weight' => 1,
    ),
  );

  return $description;
}

If I comment it out, the attributes seem to work.

What is the thought behind it?

Thanks,
Andrey.