Quote Originally Posted by superprg
Have you called and activated the account for the Production server?
http://www.zen-cart.com/forum/showthread.php?t=43250
Yes it has been activated and moved to teh productino server. I verified that the UserID is workign on another ZenCart site I've setup. It jsut doesn't work on this particular one. Neither does another USPS UserID I've got working on another site.

I'm using version 1.3.5