The hack is easy, I just forgot to post sorry.

Open up the file googlefroogle.php in thr ROOT folder of your website.

Search for the following and un-comment them as the are no longer supported by Google Products as it's now called and not needed either.

Find

$output["label"] = "product_type";
$output["product_type"] = "product_type";

Replace with

// $output["label"] = "product_type";
// $output["product_type"] = "product_type";

They are around lines 110-111 I think.