Hello,
I have been trying to figure out how to replace the "product not found" with the also_purchased_products module. I have had no luck...
I think the code to replace is in .../Catalog/product_info.php


<?php
if ($product_check['total'] < 1) {
?>
<tr>
<td><?php new infoBox(array(array('text' => TEXT_PRODUCT_NOT_FOUND))); ?></td>
</tr>
<tr>
<td><?php echo tep_draw_separator('pixel_trans.gif', '100%', '10'); ?></td>
</tr>


replaced with something like:

<?php
if ($product_check['total'] < 1) {
?>
<tr>
<td><?php
if ((USE_CACHE == 'true') && empty($SID)) {
echo tep_cache_also_purchased(3600);
} else {
include(DIR_WS_MODULES . FILENAME_ALSO_PURCHASED_PRODUCTS);
}
}
?></td>
</tr>
<tr>
<td><?php echo tep_draw_separator('pixel_trans.gif', '100%', '10'); ?></td>
</tr>

What I would like to accomplish:
When a customer searches for an item that is out of stock, the website will then display the items that previous Customers, who bought this product, additionally purchased.