Capture out and Send 1 no longer working

My Send 1 and Capture out have stopped working. There’s very small amount of sound coming through if I turn the instrument lelvel or send 1 out level all the way up, but not usable. Both were working. Not sure if this is a hardware problem, or something that happened in the latest update. Anyone else seen anything like this?

I use Send 1 to send a dry guitar level signal to my vocal processor. I wondered why the harmonizer wasn’t tracking at out gig last Friday. Now I know its because the Send 1 isn’t sending anything. Send 2 is working and I can change to that for now.

But I can’t do any captures either.