For those having problems adding more music slots to a Stage or the Names of a Song not replacing in-game, you have to start over again (which I'm sure the creator said as well) without using "Save/Load Configuration".
Just open Sm4shMusic and edit it from there, don't click Load or Save your Configuration. Once you finish editing everything, just click "Compile Modifications" since that saves your work too.
That worked for me.
Just open Sm4shMusic and edit it from there, don't click Load or Save your Configuration. Once you finish editing everything, just click "Compile Modifications" since that saves your work too.
That worked for me.