Now it works PERFECTLY!!!
"Configuration successfully saved to 'Config/Supermodel.ini'."
the result on the terminal WAS like this
"iMac-di-LG:~ LG$ /Users/LG/Documents/supermodel/Supermodel /Users/LG/Documents/supermodel/roms/xxxx.zip"
when i enter in the correct directory and launch from there (as you write) it worked!!!
Thanks!!