my music score keeps saying that "this score is invalid" when I try to open it
I have been working on this score for over a week and not had a problem with it. then I close the score tonight and when I reopen it to double check that it has been saved I keep getting this same error message that says "this score could not be opened" "this score is invalid"
if anyone could Please help me with this because its been a lot of work put into this score and I don't want to lose it