I'm trying to set up the authorize.net payment module on an 2.2ms1 store and having a little difficulty, I've turned on password mode in Authorize.net put the Transaction Key into the authorize.net module and checked everything else I can find, when I process a transaction and hit confirm order I just get a bar across the top that says there has been an error processing your credit card. The address bar says https://secure.authorize.net/gateway/transact.dll and the site looks like my site but it won't process the cards. I can't find any more descriptive error messages anywhere.
Any help is appreciated.
Thanks
Eric