This works great with everything except Download Expander. Download Expander calls the following:
HTML Code:
<a href="product.php?productid={$product.productid}">{include file="product_thumbnail.tpl" productid=$product.productid image_x=$product.image_x image_y=$product.image_y product=$product.product}</a> </td>
Unfortunately, the above code displays no image

, however, everything else seems to work just fine. Thanks for the post!