If I have posted this in the wrong area please forgive me.

We have Zen Cart in Productions mode and Authorize.net in test mode.

We are having problems with the following error:
WARNING: Security hash problem. Please contact store-owner immediately. Your order has *not* been fully authorized.
and
Communications Error - Please notify webmaster. - Your credit card could not be authorized for this reason. Please correct the information and try again or contact us for further assistance.
We have changed the hash in the admin area (Zen) and in authorize.net settings. I don't have a long hash.

We are using Authorize.net (AIM)

I have spoken with Authorize.net but have not gotten anywhere. The following log file come the email.
> Results Received back from Authorizenet: Array
> (
> [0] => Response from gateway
> [1] =>
> [Expected-MD5-Hash] => XXXXXXXXXXXXXXXXXXXXXX (Changed out code for X)
> [HashMatchStatus] => FAIL
I have a clinet that needs to get their site up and any help would be a be helpful and a big thanks.

K