I have a couple of things...
1. message stack/notice is not showing up when customer is not logged in and tries to write a review with Enable product reviews by guests? set to 0.

2. I had previously added reply to reviews functionality to my 1.3.9h store. I am trying to add it to this with some problems. I am hoping that someone notices and can correct my mistake/s and/or omissions.
All I have been getting is a blank page with no right side boxes, and no myDebug out put either...???
here is a list of my mods...

SQL
Code:
ALTER TABLE  `reviews_description`
  ADD  `reviews_reply_text` TEXT CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL;
modules/pages/product_reviews_info/header_php.php:
Code:
// addition of reviews_reply_text below

  $review_info_query = "SELECT rd.reviews_text, r.reviews_rating, r.reviews_id, r.customers_name,  rd.reviews_reply_text,

                               r.date_added, r.reviews_read, p.products_id, p.products_price,

                               p.products_tax_class_id, p.products_image, p.products_model, pd.products_name

                        FROM " . TABLE_REVIEWS . " r, " . TABLE_REVIEWS_DESCRIPTION . " rd, " . TABLE_PRODUCTS . " p, " . TABLE_PRODUCTS_DESCRIPTION . " pd

                        WHERE r.reviews_id = :reviewsID

                        AND r.reviews_id = rd.reviews_id

                        AND rd.languages_id = :languagesID

                        AND r.products_id = p.products_id

                        AND p.products_status = '1'

                        AND p.products_id = pd.products_id

                        AND pd.language_id = :languagesID " . $review_status;



  $review_info_query = $db->bindVars($review_info_query, ':reviewsID', $_GET['reviews_id'], 'integer');

  $review_info_query = $db->bindVars($review_info_query, ':languagesID', $_SESSION['languages_id'], 'integer');

  $review_info = $db->Execute($review_info_query);



  $products_price = zen_get_products_display_price($review_info->fields['products_id']);



  $products_name = $review_info->fields['products_name'];

//addition of reviews reply
  if ($review_info->fields['reviews_reply_text']) != '') {
		$reviews_reply_text = $review_info->fields['reviews_reply_text'];
		}

  if ($review_info->fields['products_model'] != '') {

    $products_model = '<br /><span class="smallText">[' . $review_info->fields['products_model'] . ']</span>';

  } else {

    $products_model = '';

  }
languages/english/YOUR_TEMPLATE/product_reviews_info.php
Code:
define('TEXT_OF_5_STARS', '');

define('TEXT_PRODUCT_INFO', 'Take Me to the Details');

define('TEXT_REVIEW_ADDITIONAL', 'Read More Reviews');
//addition of review reply heading
define('TEXT_REVIEW_REPLY_HEADING','<strong>' . STORE_NAME . ''s Reply:</strong>');
templates/YOUR_TEMPLATE/templates/tpl_product_reviews_info_default.php
Code:
ADDED TO THE BOTTOM, JUST BEFORE THE LAST </div>

<!--bof Reviews Reply -->

<br class="clearBoth"/>

<?php
if ($reviews_reply_text) != ''){
?> 
<div id="reviewsInfoDefaultMainContent" class="content"><?php echo TEXT_REVIEW_REPLY_HEADING; ?><br /><?php echo zen_break_string(nl2br(zen_output_string_protected(stripslashes($review_info->fields['reviews_reply_text']))), 60, '-<br />'); ?></div>

<?php } ?>
<!--eof Reviews Reply-->
</div>
My hope is to get this working properly, and then add the ability to write your reply on the "edit review" page in the admin. I am currently just writing the reply's through phpMyAdmin and then approving the review there.

The working 1.3.9 version of this is here

Non working 1.5.1 is here - (this store is not yet public!)