pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-18584-___.ps) >>/Users/jc/w/tmp/Tune-18584-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/session/jig/Damoselle-D,G-44-3.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_18584.log 312430 Log file, useful mostly for debugging
Tune-18584-___.abc 2556 ABC music file with the extracted tune(s)
Tune-18584-___.ps 41220 PostScript
Tune-18584-___.txt 2556 Plain-text file with the extracted tune(s)
Tune-18584-get.log 5070 Log file, useful mostly for debugging
These files should be available for 24 hours.