Just installed this mod and no errors while installing.
However, I can't get the feature to actually show on a product page.

This is the product page I'm working on to start:
http://www.vintagegunleather.com/sho...roducts_id=276

It is supposed to show beneath the add to cart, so it'll be the last thing on the page.

When you view the page source code you see it ends with:

Code:
<!--bof Add to Cart Box -->
                  <div id="cartAdd">
    <input type="hidden" name="cart_quantity" value="1" /><input type="hidden" name="products_id" value="276" /><input type="image" src="includes/templates/vgl/buttons/english/button_in_cart.gif" alt="Add to Cart" title=" Add to Cart " />          </div>
  <br class="clearBoth" />
<!--eof Add to Cart Box-->

<!-- BEG: Multi Cross-Sell mod -->
But yet, the actual file from that point on is:
Code:
<!--bof Add to Cart Box -->
<?php
if (CUSTOMERS_APPROVAL == 3 and TEXT_LOGIN_FOR_PRICE_BUTTON_REPLACE_SHOWROOM == '') {
  // do nothing
} else {
?>
            <?php
    $display_qty = (($flag_show_product_info_in_cart_qty == 1 and $_SESSION['cart']->in_cart($_GET['products_id'])) ? '<p>' . PRODUCTS_ORDER_QTY_TEXT_IN_CART . $_SESSION['cart']->get_quantity($_GET['products_id']) . '</p>' : '');
            if ($products_qty_box_status == 0 or $products_quantity_order_max== 1) {
              // hide the quantity box and default to 1
              $the_button = '<input type="hidden" name="cart_quantity" value="1" />' . zen_draw_hidden_field('products_id', (int)$_GET['products_id']) . zen_image_submit(BUTTON_IMAGE_IN_CART, BUTTON_IN_CART_ALT);
            } else {
              // show the quantity box
    $the_button = PRODUCTS_ORDER_QTY_TEXT . '<input type="text" name="cart_quantity" value="' . (zen_get_buy_now_qty($_GET['products_id'])) . '" maxlength="6" size="4" />' . zen_get_products_quantity_min_units_display((int)$_GET['products_id']) . '' . zen_draw_hidden_field('products_id', (int)$_GET['products_id']) . zen_image_submit(BUTTON_IMAGE_IN_CART, BUTTON_IN_CART_ALT);
            }
    $display_button = zen_get_buy_now_button($_GET['products_id'], $the_button);
  ?>
  <?php if ($display_qty != '' or $display_button != '') { ?>
    <div id="cartAdd">
    <?php
      echo $display_qty;
      echo $display_button;
            ?>
          </div>
  <?php } // display qty and button ?>
<?php } // CUSTOMERS_APPROVAL == 3 ?>
<br class="clearBoth" />
<!--eof Add to Cart Box-->

<!-- BEG: Multi Cross-Sell mod -->
<?php
  if(defined('MXSELL_ENABLED') && MXSELL_ENABLED == 'true') {
    for ( $mxsell = 1; $mxsell <= MXSELL_NUM_OF_TABLES; $mxsell++ ) { // show all cross sells
      require($template->get_template_dir('tpl_modules_multi_xsell_products.php', DIR_WS_TEMPLATE, $current_page_base,'templates'). '/' . 'tpl_modules_multi_xsell_products.php');
    }
  }
?>
<!-- END: Multi Cross-Sell mod -->

<!--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 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 Product URL -->
<?php
  if (zen_not_null($products_url)) {
    if ($flag_show_product_info_url == 1) {
?>
    <p id="productInfoLink" class="productGeneral centeredContent"><?php echo sprintf(TEXT_MORE_INFORMATION, zen_href_link(FILENAME_REDIRECT, 'action=url&goto=' . urlencode($products_url), 'NONSSL', true, false)); ?></p>
<?php
    } // $flag_show_product_info_url
  }
?>
<!--eof Product URL -->

<!--bof also purchased products module-->
<?php require($template->get_template_dir('tpl_modules_also_purchased_products.php', DIR_WS_TEMPLATE, $current_page_base,'templates'). '/' . 'tpl_modules_also_purchased_products.php');?>
<!--eof also purchased products module-->

<!--bof Form close-->
</form>
<!--bof Form close-->
</div>
So, something in the cross sell code above is breaking the page's code. I don't know enough about PHP to pinpoint the problem. This is a direct copy and past from the Sample file. What was in the Document file didn't have that first "if" line (about Enabling).

Zencart V 3.1.8a
I have the module set for 1 cross sell box, 3 products across, 3 products max.