pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-21935-MuldoonsFavoriteReel.ps) >>/Users/jc/w/tmp/Tune-21935-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ryan-cole/Tunes/MuldoonsFavoriteReel.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-21935-MuldoonsFavoriteReel.abc 528 ABC music file with the extracted tune(s)
Tune-21935-MuldoonsFavoriteReel.ps 37331 PostScript
Tune-21935-MuldoonsFavoriteReel.txt 528 Plain-text file with the extracted tune(s)
Tune-21935-get.log 10167 Log file, useful mostly for debugging
These files should be available for 24 hours.