I inadvertently had an empty event ticked in my RGBL sequence i.e. 5 events ticked instead of four. When I started the seq it said uncheck the event which I did. I then started the sequence and it said the same thing. So I deleted the event and saved the sequence. I tried t start it again, but same message. I had to disconnect all the gear and close sgp. I opened the 4 event sequence but it still would not run.
So I created a new one with 4 events and that is now running. Perhaps a bug?