pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-34827-on_a_misty_night.ps) >>/Users/jc/w/tmp/Tune-34827-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/jazz/on_a_misty_night.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-34827-get.log 9384 Log file, useful mostly for debugging
Tune-34827-on_a_misty_night.abc 1474 ABC music file with the extracted tune(s)
Tune-34827-on_a_misty_night.ps 46477 PostScript
Tune-34827-on_a_misty_night.txt 1474 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.