Groove Agent - No Sound?

Hi. I am somewhat new to this. Playing with Cubase AI with a Steinberg 242. I have no problems creating, listening to, recording sounds, when I create an Instrument track with Halion Sonic. But when I create a track using Groove Agent - I see the midi notes - but just can’t get it to produce audio output. If I point the same track at Halion (all things being equal) all is audible once again (I can hear the Halion sound selected playing using the Midi data that was inserted using Groove Agent). I must be missing something simple? Thanks for any suggestions. Rich


Is any sound loaded?