Greetings,

Whenever something like this happens to me, I do the following:

1. Reboot ( many times this is all you need to do)

2. After opening BIAB, check your midi settings for Output, making sure they haven´t changed.

3. Return to Factory settings

4. Delete Ïnterface.BBW

If all that hasn´t resolved the issue, a quick click on the Live Help button will get you through to the good folks at tech support here at PG music.

Hope that helps,
Ed