pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-18573-CountessOfLoudensReel.ps) >>/Users/jc/w/tmp/Tune-18573-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ryan-cole/Tunes/CountessOfLoudensReel.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_18573.log 407970 Log file, useful mostly for debugging
Tune-18573-CountessOfLoudensReel.abc 494 ABC music file with the extracted tune(s)
Tune-18573-CountessOfLoudensReel.ps 36417 PostScript
Tune-18573-CountessOfLoudensReel.txt 494 Plain-text file with the extracted tune(s)
Tune-18573-get.log 4814 Log file, useful mostly for debugging
These files should be available for 24 hours.