locked Tune is red.

Jerome Sodus

Been away from ham-radio for several months.
But in May, with version 2.2.1, I had FT-8 ready to go on the air (all testing done into dummy-load); the Tune button was green. 
Then life got in the way and I had to stop.
I am quite certain no changes (software or hardware) were made since May and was startled today to see the Tune button red.
"Test CAT" is green.
The Yaesu FT-950 keys into a dummy-load.
I have not a clue where else to start looking for trouble, so "Are there any usual suspects?"
TIA for any help.
73 Jerry KM3K

Join main@WSJTX.groups.io to automatically receive all group messages.