In someway I question myself, when I try to load [swatch] of jmmmp, image try to search the images in /Users/EstebanViveros when it should be search in /Users/EstebanViveros/Library/jmmmp . Why it's happening?

that file must be in the folder jmmmp/examples. I don't know where the jmmmp folder itself is installed on a mac, but all images files of jmmmp are in the examples folder. It might be easier to delete your folder and reinstall jmmmp again.

Best,

Joao