Updated to usps.php 2017-09-16 - now not showing in cart

[JG64]

Below are the files and versions that we updated:

/home/mxxxxxx/public_html/store/includes/languages/english/modules/shipping/usps.php

Line #16 : * @version $Id: usps.php 2017-09-16 ajeh - tflmike Version K10 $
/home/mxxxxxx/public_html/store/includes/modules/shipping/usps.php

Line # 16 : * @version $Id: usps.php 2017-09-16 ajeh - tflmike, 2018-03-28 - bislewl Version K10 $

Is this not working for zencart version 1.5.6? If not, what is the best way for us to get USPS back on our store.

USPS confirmed we are in production mode.

Thank you,
JG64