Quote Originally Posted by cropinstop View Post
Found the solution.

An "attribute stock exceeded" check is missing from "includes/modules/pages/checkout/header_php.php". This file is unique to the "Fast and Easy Checkout" contribution. .....
I'm having a problem with FEC: my installation of FEC made the checkout process STOP checking out the 'stock by attributes' module completely. So it doesn't reduce the stock.

Any clue what's happening? Thanks in advance.