pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5758-Marshall_Hills_Hp_Bb_Kerr.ps) >>/Users/jc/w/tmp/Tune-5758-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/hornpipe/Marshall_Hills_Hp_Bb_Kerr.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_57580.log 240774 Log file, useful mostly for debugging
Tune-5758-Marshall_Hills_Hp_Bb_Kerr.abc 532 ABC music file with the extracted tune(s)
Tune-5758-Marshall_Hills_Hp_Bb_Kerr.ps 37474 PostScript
Tune-5758-Marshall_Hills_Hp_Bb_Kerr.txt 532 Plain-text file with the extracted tune(s)
Tune-5758-get.log 4793 Log file, useful mostly for debugging
These files should be available for 24 hours.