pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-55067-170_Bonne_foi.ps) >>/Users/jc/w/tmp/Tune-55067-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Straight_Skillern/170_Bonne_foi.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_55067.log 261851 Log file, useful mostly for debugging
Form_55067.log 1644 Log file, useful mostly for debugging
Tune-55067-170_Bonne_foi.abc 737 ABC music file with the extracted tune(s)
Tune-55067-170_Bonne_foi.ps 33521 PostScript
Tune-55067-170_Bonne_foi.txt 737 Plain-text file with the extracted tune(s)
Tune-55067-get.log 4586 Log file, useful mostly for debugging
These files should be available for 24 hours.