you might want to try reinstalling the warband dedicated server files, then place these over them again. the NaS server or module doesn't change anything to do with text.
1. redownload the warband (or napoleonic wars) dedicated server files, set them up
2. redownload the north and south server files, and unpack them into the dedicated server folder
if that doesn't work, you might want to check on taleworlds and see if there are any similar problems
hope this helps!