Everything had been working fine for a long time.  But today problems started,

Solo button on individual channels won't stay lit.  I have both the M and S buttons highlighted on the top right, but individual channels I cannot solo.  However, I can mute individual channels.  Also my channels on the hardware outs used to show a slightly different color when I selected one of them.  Now they do not.  I've shut down and restarted everything but that didn't help.

Any ideas?

It almost seems like every hardware output channel is "selected" together.