I upgraded my shop to 1.7.7.4 via oneclick upgrade and now in my shop a client cannot add products to cart, in my pos module I cannot add products to cart, that gives me a message not enough quantity.
I had my shop configured to allow ordering with no stock,, because 90% of our products are custom made and manufactured when ordered.
I went through and added 50000 quantity to all my products and I still cannot order in the shop or the pos module(which still gives me the same error), I dont want to go back to 1.6.5 because that uses php version which is no longer supported and deprecated.
How can I start to fix this please.