Ini file on RT seems only readable. I tried to use Configuration File vi to change them, but it didn't work. The program run OK and didn't give any error, but the ini file didn't change at all.
Did you try overwriting it explicitly (COPY another file in its place)? I don't have any RT devices near me, so I can't test this myself. Is this INI files or general or specifically the files used for the app?