im running windows 10 and using a midi in/out to usb lead when i use it on my old technics keyboard i am able to input and output to musescore.
when i try to use it with my yamaha ydp 131 piano i can input to musescore but not output ?
when i try to load the yamaha driver it fails with the 25001 error code saying device not connected.
when i check in device manager its recognized in software devises as usb midi but not in the usb controllers
hope the above information can help you give me ideas how to fix the output