Character set reset to <x> to suit <language>
Prior to version 2.00.07, WordSmith Tools handled fewer character sets and languages than it does now. Accordingly, data saved in the format used before that version may not "know" what language it was based on. If you get this message when opening up an old WordSmith data file, it's because WordSmith doesn't know what language it derived from. Through gross linguistic imperialism, it will by default assume that the language is English!
If the data are okay, just click the save button so that next time it will "know" which language it's based on. If not, reset the language to the one you want in the Controller, Language Settings | Text, then re-save the list.