Garritan
Every other VST plays fine in MS. Garritan does not. I don't know what I'm not doing correctly. It's obviously installed in MuseScore Studio as it appears in the mixer just as the handbook says. It works correctly with all my other music software (Logic, Finale). When I play a file in MS I can see that the midi is reaching the Aria player because the keystrokes show on the Aria keyboard. But, there's no sound nor does the mixer show fluctuating input/loutput levels as it does with the other VSTs. The signal obviously isn't getting from the player to the MS mixer. I posted on the FB group but no one answered. Hopefully someone here will. Same with the reddit group. 
Comments
Does it work with sforzando? The multi-channel functionality of Aria Player is of no use in MuseScore anyway.
In reply to Does it work with sforzando?… by graffesmusic
I don't know. I'm not familiar with sforzando, but I'm at their website. I'll try it, assuming it'll handle Garritan libraries. Thanks for getting back to me! I've tried FB, reddit but no luck with solution yet. May I respond further to you by email
In reply to Does it work with sforzando?… by graffesmusic
Downloading and installing sforzando was less than satisfactory. I may--undecided--try again another time.
Are other people able to use Aria Player with MuseScore Studio? Or is it just me that's having an issue?