Quote Originally Posted by dalecooper View Post
K11h fixed the issue I was having (here: https://www.zen-cart.com/showthread....out-inoperable ), so thank you!

Is it safe to doctor the usps.php file to disable media mail for certain product categories? That was what started my issue last night. I have done this with prior versions of the file but don't want to mess with it if it will break, obviously.
FWIW, there's an example of how to do that via an observer-class script in the /extras sub-directory of the USPS shipping module's zip-file. That way, you don't have to re-apply your changes the next time the shipping module's updated.