Hi KnightWare,

Would you please share some more details with us, and we will work to fix this for you.

You're selecting a SGU or MGU file in the iOS OneDrive app, and following the Share action, selecting Band-in-a-Box iOS as the destination, correct? If you could share the exact song file, I can test it.

It's also possible this could be a privacy setting issue for the OneDrive app. Can you get the song file into Band-in-a-Box if you save it from OneDrive to the iOS Files location first?