pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2773-FourPenceHalfPennyFarthing_PLFD1688_296.ps) >>/Users/jc/w/tmp/Tune-2773-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/FourPenceHalfPennyFarthing_PLFD1688_296.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-2773-FourPenceHalfPennyFarthing_PLFD1688_296.abc 498 ABC music file with the extracted tune(s)
Tune-2773-FourPenceHalfPennyFarthing_PLFD1688_296.ps 34945 PostScript
Tune-2773-FourPenceHalfPennyFarthing_PLFD1688_296.txt 498 Plain-text file with the extracted tune(s)
Tune-2773-get.log 5882 Log file, useful mostly for debugging
Tune-27731-get.log 1354 Log file, useful mostly for debugging
These files should be available for 24 hours.