Instrument not playing back

Hope you can help.

For some reason, two of my instruments have stopped playing back. One (the guitar) is unaffected. I don’t know why. Other projects seem to work fine.

When I open Halion Sonic SE, the instrument level meters appear to work but there is no sound.

I’ve attached the file. Thanks.
Cantina Band - JC Jazz (646 KB)

Try going to Play mode and choosing Play > Deactivate All Mute States and Play > Deactivate All Solo States. That should take care of it!

Oh, thank you! Perfect.