Well, I am not the right person to reply but I would suggest the following :
-
Go to Admin->Configuration->Product Info to check the following :
Previous Next - Navigation Bar Position
Location of Previous/Next Navigation Bar
0= off
1= Top of Page
2= Bottom of Page
3= Both Top and Bottom of Page
If this is what you mean that "it is ON in Admin" and you have configured it, then,
- Go to your "catalog\includes\templates\template_default\templates" where "template_default" is YOUR TEMPLATE [if you use a custom template], and open the file "tpl_product_info_display.php" with the text editor you use.
In this file search for "<!--eof Prev/Next top position -->" and check if you can see the following or similar to the following :
<!--eof Prev/Next top position -->
<?php if (PRODUCT_INFO_PREVIOUS_NEXT == 1 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, $current_page_base,'templates'). '/tpl_products_next_previous.php'); ?>
<?php } ?>
<!--eof Prev/Next top position-->
If you can't find this, then add it. I believe this exists even if you have made heavy changes to your template, but just in case you can check it.
Also open and check the file "tpl_products_next_previous.php" located in folder "templates" where YOUR TEMPLATE is, for the following or similar to it :
<div class="navNextPrevWrapper centeredContent">
<?php
// only display when more than 1
if ($products_found_count > 1) {
?>
<p class="navNextPrevCounter"><?php echo (PREV_NEXT_PRODUCT); ?><?php echo ($position+1 . "/" . $counter); ?></p>
<div class="navNextPrevList"><a href="<?php echo zen_href_link(zen_get_info_page($previous), "cPath=$cPath&products_id=$previous"); ?>"><?php echo $previous_image . $previous_button; ?></a></div>
<div class="navNextPrevList"><a href="<?php echo zen_href_link(FILENAME_DEFAULT, "cPath=$cPath"); ?>"><?php echo zen_image_button(BUTTON_IMAGE_RETURN_TO_PROD_LIST, BUTTON_RETURN_TO_PROD_LIST_ALT); ?></a></div>
<div class="navNextPrevList"><a href="<?php echo zen_href_link(zen_get_info_page($next_item), "cPath=$cPath&products_id=$next_item"); ?>"><?php echo $next_item_button . $next_item_image; ?></a></div>
<?php
}
?>
</div>
If everything is ok, for the moment I can not remember what else could be wrong.
