If its the problem I am thinking of, then the names would be of random people who worked on the game. Regarding the USCM's text-boxes that appear when you use a function, instead of creating a new GXT entry for each one, I just used already existing GXT entries (specifically, ones used during the credits sequence - thus they wouldn't really be missed) and changed what they said (usually a persons name) to what I wanted (Eg. 'Ghosttown Enabled').
If the American.gxt file that came with the USCM was not used, then everything would work fine, you'd just get the original values of those GXT entries in the text-boxes (the people's names) - which is why I assumed that is whats causing the problem.