pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-17011-HenriettaHornpipe.ps) >>/Users/jc/w/tmp/Tune-17011-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ryan-cole/Tunes/HenriettaHornpipe.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Find_17011.log 1503 Log file, useful mostly for debugging
Tune-17011-HenriettaHornpipe.abc 516 ABC music file with the extracted tune(s)
Tune-17011-HenriettaHornpipe.ps 36220 PostScript
Tune-17011-HenriettaHornpipe.txt 516 Plain-text file with the extracted tune(s)
Tune-17011-get.log 4685 Log file, useful mostly for debugging
These files should be available for 24 hours.