Woohoo! I am no longer receiving the error messages mention above!
I went into authorizenet_aim.php and modified the URL to point to the correct test address. I hope this information helps others who have the same problem I was having.
My log file now states:
May-21-2008 01:37:07
=================================
Response Code: 1.
Response Text: (TESTMODE) This transaction has been approved.
What other ways can I verify that the transaction was completed and processed by A.NET? I tried logging onto my A.NET test merchant account, but couldn't find any information regarding my recent test order. I'll keep looking around.
I'm very thankful for the wonderful zen cart community, which is the #1 reason why I picked zen cart over other open source ecomm software.



