The first drone I create is not available as on option to choose for a track in synfire

Hello,

Firstly, thanks for all the help the last few days getting my Synfire up and running on a new machine.

I've ran into another snag, when I'm creating drones to use with my DAW, the first drone I create is greyed out and not available for me to choose as an output in Synfire.

anyone know why this might be the case?

Thanks,

dw