Actually! I just discovered why the issue is happening. It's a gamepad issue within the engine and I will be publishing a fix soon!
Viewing post in (Mario) The Music Box Remastered Edition comments
Please let us know when you manage to fix it, I really want to try out this game in my new computer I just got. I did found out that there were some issues with my controller when I tried to link it to Windows 10 and I tried 2 different programs to configurate my controller into different engines for it to adapt to the game (Since I though the problem was the controller and Windows itself) but it ended on a new whole error screen!
I'll try to do some research on my own but if there's any solution you got I would appreciate it, thank you
(I have no clue if it matters but my controller is a Switch Pro Controller)