pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1293-10531_JOHNNY_MILLICENTS_HORNPIPE.ps) >>/Users/jc/w/tmp/Tune-1293-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/10531_JOHNNY_MILLICENTS_HORNPIPE.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_12931.log 263256 Log file, useful mostly for debugging
Coll_12939.log 266066 Log file, useful mostly for debugging
Tune-1293-10531_JOHNNY_MILLICENTS_HORNPIPE.abc 787 ABC music file with the extracted tune(s)
Tune-1293-10531_JOHNNY_MILLICENTS_HORNPIPE.ps 39253 PostScript
Tune-1293-10531_JOHNNY_MILLICENTS_HORNPIPE.txt 787 Plain-text file with the extracted tune(s)
Tune-1293-get.log 4984 Log file, useful mostly for debugging
Tune-12937-get.log 9093 Log file, useful mostly for debugging
Tune-12938-get.log 16786 Log file, useful mostly for debugging
These files should be available for 24 hours.