I can't convert MIDI tracks/clips to audio in Studio One using Sample Tank 3. I can do it with other samplers, e.g. Addictive Drums 2 and Halion Sonic, using the Studio One standard 'Bounce selection' command which produces an audio track and mutes the MIDI track in readiness for just playing the audio track. Studio One shows the usual progress popup, except the audio track has no sound or waveform.
I suspect it's related to another oddity which I get with Sample Tank in Studio One but not in Cakewalk, and that is that I very frequently have to reload the sample. I've never come across this before, the sample in Sample Tank still shows, but won't make sounds via its keyboard or in Studio One when the MIDI track is played. But if I reload the sample, as if loading a new one, the sounds work again. I'm really stuck on this one, and have run out of places to look for the problem.