Ghostscipt failure 256

[Pieter Terpstra]

Dear people,
With one file that i wanted to reedit today gives now a failure, it worked fine 
in june, 2016.

Will not post it here because it is 1274 lines long.

The log says this:
Layout output to `120-Arpeggios.ps'...
Converting to `./120-Arpeggios.pdf'...
warning: `(gs -q -dSAFER -dDEVICEWIDTHPOINTS=612.00 -dDEVICEHEIGHTPOINTS=792.00 
-
dCompatibilityLevel=1.4 -dNOPAUSE -dBATCH -r1200 -sDEVICE=pdfwrite 
-sOutputFile=./120-
Arpeggios.pdf -c.setpdfwrite -f120-Arpeggios.ps)' failed (256)

fatal error: failed files: "/home/neljor/LLP/Giuliani/Opus1/120-Arpeggios.ly"
Exited with return code 1.

Version ghostscript is 9.15, have also tried 9.20 with the same result.
Lilypond version is  2.18.2

Any ideas??

Thank you so much in advance!

Peter