@Michael - The SoundCloud API either changed (or has a bug), which doesn’t allow us to write new data to the “release number” field. That data is necessary to make the Multiple Version functionality work.
I’ve been desperately trying to get in touch with SoundCloud, who is notoriously unresponsive. If it’s a bug, then we just wait for it get repaired. And if it’s an intentional change to their API, then we’ll have to disable the feature or figure out another solution.
If you already had the release number data in there before the bug surfaced, it should be working correctly. But if you’re trying to add it now, you’ll get problems. Send me an email at email@example.com and I can check out your account.