I’m getting “Sorry, this product is unavailable. Please choose a different combination” when I select a product variation. Woocommerce > Product > Inventory > enable stock management is unchecked. Running X theme 4.6.4 on WP 4.6.1 and WooCommerce 2.6.8. Example of problem can be found at http://waltonsmillshop.co.uk/product/zephyr/. Help appreciated.