pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3917-Saw_you_my_Father.ps) >>/Users/jc/w/tmp/Tune-3917-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Thompson/Saw_you_my_Father.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_39179.log 807 Log file, useful mostly for debugging
Tune-3917-Saw_you_my_Father.abc 429 ABC music file with the extracted tune(s)
Tune-3917-Saw_you_my_Father.ps 33137 PostScript
Tune-3917-Saw_you_my_Father.txt 429 Plain-text file with the extracted tune(s)
Tune-3917-get.log 8934 Log file, useful mostly for debugging
Tune-39171-get.log 8258 Log file, useful mostly for debugging
Tune-39175-Thomas_and_Sally-001.svg 27571 Scalable Vector Graphics format
Tune-39175-Thomas_and_Sally.abc 682 ABC music file with the extracted tune(s)
Tune-39175-Thomas_and_Sally.txt 682 Plain-text file with the extracted tune(s)
Tune-39175-get.log 5106 Log file, useful mostly for debugging
These files should be available for 24 hours.