Welcome to the forum. If you are trying to load the scene file from the front USB port on the X32 Core, it won't work, due to a bug that was never fixed. And unfortunately the X32 Core has been discontinued. So the solution to load scene files is to do it using either the X32-Edit or one of Patrick's apps (found here). The X32SetScene app will do just that.
Paul Vannatto, Volunteer Forum Administrator and Moderator