by mattooo » Thu Oct 16, 2008 9:06 am
I was experiencing the same issue. One possible solution: make sure you call the phone number in the email USPS sends to you when you register your account and make it "active". Until you call that number and do so you will definitely receive the XML response error.
Once I made the account active with USPS the error disappeared immediately. And don't worry about the "testing" they ask you to do in the email; ShopSite already has the XML gateway set up and working for you so you shouldn't have to worry about testing that it works for you personally.