The problem is that the modifcation made in file APPLICATION_TOP.PHP is incorrect.
FIND THIS CODE:
// customer adds a product from the products page
case 'add_product' : if (isset($HTTP_POST_VARS['products_id']) && is_numeric($HTTP_POST_VARS['products_id'])) {
$cart->add_cart($HTTP_POST_VARS['products_id'], $cart->get_quantity(tep_get_uprid($HTTP_POST_VARS['products_id'], $HTTP_POST_VARS['id']))+1, $HTTP_POST_VARS['id']);
}
tep_redirect(tep_href_link($goto, tep_get_all_get_params($parameters)));
break;
// performed by the 'buy now' button in product listings and review page
case 'buy_now' : if (isset($HTTP_GET_VARS['products_id'])) {
if (tep_has_product_attributes($HTTP_GET_VARS['products_id'])) {
tep_redirect(tep_href_link(FILENAME_PRODUCT_INFO, 'products_id=' . $HTTP_GET_VARS['products_id']));
} else {
$cart->add_cart($HTTP_GET_VARS['products_id'], $cart->get_quantity($HTTP_GET_VARS['products_id'])+1);
}
}
tep_redirect(tep_href_link($goto, tep_get_all_get_params($parameters)));
break;
and REPLACE WITH
// customer adds a product from the products page
case 'add_product' : if (!tep_session_is_registered('customer_id')) {
$navigation->set_snapshot();
tep_redirect(tep_href_link(FILENAME_LOGIN, '', 'SSL'));
}
else {
if (isset($HTTP_POST_VARS['products_id']) && is_numeric($HTTP_POST_VARS['products_id'])) {
$cart->add_cart($HTTP_POST_VARS['products_id'], $cart->get_quantity(tep_get_uprid($HTTP_POST_VARS['products_id'], $HTTP_POST_VARS['id']))+1, $HTTP_POST_VARS['id']);
}
tep_redirect(tep_href_link($goto, tep_get_all_get_params($parameters)));
}
break;
// performed by the 'buy now' button in product listings and review page
case 'buy_now' :
if (!tep_session_is_registered('customer_id')) {
$navigation->set_snapshot();
tep_redirect(tep_href_link(FILENAME_LOGIN, '', 'SSL'));
}
else {
if (isset($HTTP_GET_VARS['products_id'])) {
if (tep_has_product_attributes($HTTP_GET_VARS['products_id'])) {
tep_redirect(tep_href_link(FILENAME_PRODUCT_INFO, 'products_id=' . $HTTP_GET_VARS['products_id']));
} else {
$cart->add_cart($HTTP_GET_VARS['products_id'], $cart->get_quantity($HTTP_GET_VARS['products_id'])+1);
}
}
tep_redirect(tep_href_link($goto, tep_get_all_get_params($parameters)));
}
break;
It should work now