pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5962-CR57.ps) >>/Users/jc/w/tmp/Tune-5962-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Contra/CR57.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_59620.log 330695 Log file, useful mostly for debugging
Coll_59626.log 240774 Log file, useful mostly for debugging
Tune-5962-CR57.abc 1452 ABC music file with the extracted tune(s)
Tune-5962-CR57.ps 45129 PostScript
Tune-5962-CR57.txt 1452 Plain-text file with the extracted tune(s)
Tune-5962-get.log 4330 Log file, useful mostly for debugging
Tune-59620-get.log 13818 Log file, useful mostly for debugging
Tune-59627-get.log 4513 Log file, useful mostly for debugging
These files should be available for 24 hours.