pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-58130-___.ps) >>/Users/jc/w/tmp/Tune-58130-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Italy/OMarenariello-D,E.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-58130-___.abc 2086 ABC music file with the extracted tune(s)
Tune-58130-___.ps 51362 PostScript
Tune-58130-___.txt 2086 Plain-text file with the extracted tune(s)
Tune-58130-get.log 4857 Log file, useful mostly for debugging
These files should be available for 24 hours.