pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1613-JacobHallsJig.ps) >>/Users/jc/w/tmp/Tune-1613-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/JacobHallsJig.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-1613-JacobHallsJig.abc 330 ABC music file with the extracted tune(s)
Tune-1613-JacobHallsJig.ps 33424 PostScript
Tune-1613-JacobHallsJig.txt 330 Plain-text file with the extracted tune(s)
Tune-1613-get.log 4495 Log file, useful mostly for debugging
Tune-16135-My_Lady_Cullen.abc 201 ABC music file with the extracted tune(s)
Tune-16135-My_Lady_Cullen.pdf 7653 Portable Data Format
Tune-16135-My_Lady_Cullen.ps 31698 PostScript
Tune-16135-My_Lady_Cullen.txt 201 Plain-text file with the extracted tune(s)
Tune-16135-get.log 5365 Log file, useful mostly for debugging
These files should be available for 24 hours.