Hello,

Band-in-a-Box is currently compatible with OS 10.6 through 10.15 (Catalina). There are known issues with Big Sur, including the ones you've found:

- Lead sheet and Notation window are blank.

- Crash at bootup on some systems.

- 'Purple' color in parts of the Mixer and toolbar GUI.

We will be working to fix these issues, and will post any updates on our site/forums, however we can't give you a specific ETA at the moment.

However: one possible workaround for the crash at bootup. This does not happen on all systems. Try the following:

1. Delete the Prefs files.

2. Run Band-in-a-Box.

3. Go to the Help menu | Check for updates, and disable the automatic update check. Then restart the program.


Andrew
PG Music Inc.