Reply To: RBPH fork with new keyboard bits, and more!
If you deleted the RBHP upgrade package but didn’t delete your cache, you’re looking at stale song data. Also, the game likely will crash if you try to play harmonies in a song where the upgrade no longer exists.
As best you can, let me know what 2010 songs were’t working, or at least some examples, and the steps you took when trying to add harmonies to them.