Hi all,

I successfully upgrade my client's store over the weekend and thought everything was fine. However, when I just tested a credit card purchase using the Authorize.net AIM payment module, I get this yellow warning across the screen:

WARNING: Security hash problem. Please contact store-owner immediately. Your order has *not* been fully authorized.

I don't see any Hash setting in the module settings in admin. It does seem like the credit card goes through to authorize.net ok so I'm not sure what's up with this message.

It definitely only appeared right after the upgrade - no other changes made since then.

Thanks for any wisdom!