Paddy Ou commented, May 24, 2020 22:17
Thanks for your answer. It's oddly started to work after I changed the sounds to Garritan instruments and then back to Garritan JABB 3.
Paddy Ou created a post, May 18, 2020 07:37
I installed the 'Jazz and Big Band 3' Garritan library into Finale v26 (Windows 10) using the steps from this link: