I have been trying to get Geo Synth to play Sampletank instruments but no luck. I have watched tons of videos on YouTube. It appears I'm doing everything right but Geo Synth only plays the instrument loaded in to it, not the Sampletank instrument.
Thanks Nic! I actually figured it out later that day. I had the exact setup you described but still nothing. I discovered that if I turn the volume all the way down in Geo Synth (tab at top) then it worked.