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? If that number is lower than 842, then please close Band-in-a-Box and download the latest build 842 update from here:
https://www.pgmusic.com/support_windowsupdates.htm#842


Best,
Chantelle