File corruption?

Two things happened to my song file.

  1. I can’t start playing from the beginning. Nothing happens. I can start from 1/4 beat into the first bar and it plays fine, but not if I start from the very beginning. Deleting the first bar and inserting a new bar doesn’t change anything.

  2. I have four voices going, but voice 2 does not appear when I click the Active Voice 2 button. The other three are fine. I have all 4 boxes checked under “Visible Voices”.

What can I do about this?