Quote Originally Posted by Nanettedp View Post
Shipping Configuration errors!
Warning: USPS shipping module is either missing the username, or it is set to TEST rather than PRODUCTION and will not work.
If you cannot retrieve USPS Shipping Quotes, contact USPS to activate your Web Tools account on their production server. 1-800-344-7779 or [email protected]
You need to do exactly what that message says if you want your USPS module to work.

Quote Originally Posted by Nanettedp View Post
Warning: main(/home/tierlant/public_html/shop/includes/languages/english/modules/shipping/Express.php) [function.main]: failed to open stream: No such file or directory
This means you've uploaded an "Express.php" file to your /shop/includes/modules/shipping/ folder but have not uploaded the corresponding language file to the indicated language folder.
So, either upload the appropriate language file to the indicated folder, or delete the Express.php file from your modules/shipping folder.