I am unable to open older song files I created in versions <= BIAB 2019 after upgrading to BIAB 2021.

I am on a Mac.

Anyone else run into this?

What is the file extension of the songs you are trying to open? Also in the main Band-in-a-Box program, please go to Help | About Band-in-a-Box. Afterwards, near the top of that window, it will have Version 2021 and a number in brackets - what is that number?

We are just following up to see if you are still having this particular problem. If you end up seeing this and still are having troubles, don't hesitate to reach out!