It's likely that the old version of Tunedit won't open a newer tune release. I have run into that before.
I fixed this:
1) Installed the original Tuneboy and Tunedit and old cable driver. All programs work.
2) Then I installed the new Tuneboy and Tuneedit into a different directory. The new TuneEdit works but the new Tuneboy doesn't.
3) So I have shortcuts to the old Tuneboy ad new Tuneedit. Both work.
All I use Tuneboy for is reset adapt after loading a tune.