Unmarked time signature changes?
S4 - Minor
I changed the page format before noticing that some measures had extra rests in them. I tried just deleting the rest, but it seemed as if they were meant to be there. I don't know if the format had anything to do with it. The song is in cut time, but certain measures have five or five and a half quarters instead of four. Selecting the whole measure and clearing it with delete cures the problem. I've never noticed this happening before. Also, it keeps saying the file is corrupted even after I copy and paste the notes into a new score. Not sure if this is related.
I don't really know what's going on with this. Maybe it's a bug from the addition of 7/8?
Also the key signature was supposed to be F minor, but it registered as just C throughout the song until I reapplied the key.
In order to understand and assist, we would need you to attach your score. Corruption is basically another word for "note the right number of beats in a measure" so it sounds like MuseScore is being truthful, the queston is how did you score get into this state?