Tack Instrument Sonic SE Not Playing

I am soOOOOOOoooo frustrated at how painfully and poorly design recording software is. Every time you do something you have to remember a million little things or guess or tweak or make something work.

[Current problem] When I add a VST TRACK Instrument (Not Rack Instrument) - it shows up as a MIDI track in my track list, but it won’t play. I can record MIDI messages on it, but it won’t play.

I opened the channel settings. The input is mapped to the MIDI keyboard, the output is mapped to the stereo out – but no sound. The volume is up. For track instruments there is no way to have Mute/Solo, so that’s not an issue.

Any ideas???