[Jon]

4.0 doesn't have an add to cart there ?

I pulled some key code from the product.tpl that you can try adding to the products.tpl

No idea if this will work but backup and give it a try

{* MUST SHOW FORM POST (Note the form name is modified for each product)*}
<FORM name="orderform-{$product.productid}" method="post" action="cart.php?mode=add" OnSubmit="javascript: return FormValidation();">

{* MUST SHOW HIDDEN FIELDS *}
<INPUT type="hidden" name="productid" value="{$product.productid}">
<INPUT type="hidden" name="cat" value="{$smarty.get.cat|escape:"html"}">
<INPUT type="hidden" name="page" value="{$smarty.get.page|escape:"html"}">

{* To show subscription information *}
{if $active_modules.Subscriptions ne "" and $subscription}
{include file="modules/Subscriptions/subscription_info.tpl"}
{/if}

{* To show product options *}
{if $active_modules.Product_Options ne ""}
{ include file="modules/Product_Options/customer_options.tpl"}
{/if}

{* To show amount text box*}
{if $product.distribution eq ""}
<input type="text" name="amount">
{/if}

{* Submit Button *}
{if $js_enabled}


{if $smarty.get.pconf ne ""}
<INPUT type="hidden" name="slot" value="{$smarty.get.slot}">
<INPUT type="hidden" name="addproductid" value="{$product.productid}">
{include file="buttons/button.tpl" button_title=$lng.lbl_pconf_add_to_configuration style="button" href="javascript:if(FormValidation()) `$ldelim`document.orderform.productid.value='`$smarty.get.pconf`';document.orderform.action='pconf.php';document.orderform.submit()`$rdelim`"}
{/if}
{if $product.forsale ne "B"}
{include file="buttons/add_to_cart.tpl" style="button" href="javascript:if (FormValidation()) document.orderform.submit()"}
{else}
{$lng.txt_pconf_product_is_bundled}
{/if}
{else}
{include file="submit_wo_js.tpl" value=$lng.lbl_add_to_cart}
{/if}

{* MUST SHOW FORM END *}
</FORM>