That's not the executable script inside the package. Try:
\usepackage[program=/Applications/LilyPond.app/Contents/Resources/bin/lilypond]{lyluatex}
Or, follow the directions on the following page for making LilyPond
available from the command line on a Mac (in which case the program
option won't be needed):
http://lilypond.org/macos-x.html
--
✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝
Br. Samuel, OSB
St. Anselm’s Abbey
Washington, DC
(R. Padraic Springuel)
PAX ☧ ΧΡΙΣΤΟΣ
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