Quote Originally Posted by jeking View Post
When a customer views their order history, I get this (TABLE_HEADING_TRACKING_ID) where is should say "Tracking ID". It's working fine one a different site, so I know it's something on this site.

I tried reinstalling the original files, but that didn't fix it. Where is this variable set?
It is define in the 2 files:
admin/includes/languages/english/tracker.php
includes/languages/english/tracker.php

Make sure you have these files or reinstall these 2 files and it should work.