BIAB 2017.
Hello,
I regenerated the song several times but the bass and drum tracks have become mute and I do not know what to do.

Did you try clicking on the red M button to unmute them? (It's a click on, click off system.)

Also, it looks like you have the same plugin present on both tracks. Can you tell us a bit more about that?

• my latest song : What A Crazy Thing (cowritten with floyd jane)

I'm not sure why, but I would un-mute all other tracks, regenerate and see what the result is.

Don't dismiss a 'Return to Factory Settings' also in case your overall system has become problematic in its operation.

When this happens to me (very infrequently), this is the fix.

I've been traveling and I'm back today. Today I have access to my computer and the tracks are ok no mute. Magic!. Better so. I will do as you have said if it should happen again. Thank you.