pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-33554-ChirpingOfTheNightingale_PLFD1651_016.ps) >>/Users/jc/w/tmp/Tune-33554-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/ChirpingOfTheNightingale_PLFD1651_016.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_33554.log 905619 Log file, useful mostly for debugging
Tune-33554-ChirpingOfTheNightingale_PLFD1651_016.abc 368 ABC music file with the extracted tune(s)
Tune-33554-ChirpingOfTheNightingale_PLFD1651_016.ps 33015 PostScript
Tune-33554-ChirpingOfTheNightingale_PLFD1651_016.txt 368 Plain-text file with the extracted tune(s)
Tune-33554-get.log 5177 Log file, useful mostly for debugging
These files should be available for 24 hours.