ok after studying the code a bit (which i know very little about) it appears its missing maybe a .php or something at the end of the additional images section. if you compare to the others, its the only one not the same.
<!--eof Attributes Module -->
<!--bof Quantity Discounts table -->
<?php
if ($products_discount_type != 0) { ?>
<?php
/**
* display the products quantity discount
*/
require($template->get_template_dir('/tpl_modules_products_quantity_discounts.php',DIR_WS_TEMPLATE, $current_page_base,'templates'). '/tpl_modules_products_quantity_discounts.php'); ?>
<?php
}
?>
<!--eof Quantity Discounts table -->
<!--bof Additional Product Images -->
<?php
/**
* display the products additional images
*/
require($template->get_template_dir('/tpl_modules_additional_images.php',DIR_WS_TEMPLATE, $current_page_base,'templates'). '/tpl_modules_additional_images.php'); ?>
<!--eof Additional Product Images -->
<!--bof Prev/Next bottom position -->
<?php if (PRODUCT_INFO_PREVIOUS_NEXT == 2 or PRODUCT_INFO_PREVIOUS_NEXT == 3) { ?>
<?php
/**
* display the product previous/next helper
*/
require($template->get_template_dir('/tpl_products_next_previous.php',DIR_WS_TEMPLATE, $current_page_base,'templates'). '/tpl_products_next_previous.php'); ?>
<?php } ?>
<!--eof Prev/Next bottom position -->
<!--bof Reviews button and count-->
<?php
if ($flag_show_product_info_reviews == 1) {
// if more than 0 reviews, then show reviews button; otherwise, show the "write review" button
if ($reviews->fields['count'] > 0 ) { ?>
<div id="productReviewLink" class="buttonRow back"><?php echo '<a href="' . zen_href_link(FILENAME_PRODUCT_REVIEWS, zen_get_all_get_params()) . '">' . zen_image_button(BUTTON_IMAGE_REVIEWS, BUTTON_REVIEWS_ALT) . '</a>'; ?></div>
<br class="clearBoth" />
<p class="reviewCount"><?php echo ($flag_show_product_info_reviews_count == 1 ? TEXT_CURRENT_REVIEWS . ' ' . $reviews->fields['count'] : ''); ?></p>
<?php } else { ?>
<div id="productReviewLink" class="buttonRow back"><?php echo '<a href="' . zen_href_link(FILENAME_PRODUCT_REVIEWS_WRITE, zen_get_all_get_params(array())) . '">' . zen_image_button(BUTTON_IMAGE_WRITE_REVIEW, BUTTON_WRITE_REVIEW_ALT) . '</a>'; ?></div>
<br class="clearBoth" />
**<?php
}
}
?>**
<!--eof Reviews button and count -->