[carpeperdiem]

$product.categoryid

may need to be

$product.productid

not sure on this -- you can fish it out in webamster mode with your smarty template engine set to debug

in file, smarty.php

find:
$smarty->debug_tpl = "file:debug_templates.tpl";
change to:
#$smarty->debug_tpl = "file:debug_templates.tpl";
$smarty->debug_tpl = "file:debug.tpl";

(then turn on webmaster mode)