pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8676-Millfield_1651_PLFD1_062_CP.ps) >>/Users/jc/w/tmp/Tune-8676-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/Millfield_1651_PLFD1_062_CP.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_86769.log 429049 Log file, useful mostly for debugging
Tune-8676-Millfield_1651_PLFD1_062_CP.abc 339 ABC music file with the extracted tune(s)
Tune-8676-Millfield_1651_PLFD1_062_CP.ps 32220 PostScript
Tune-8676-Millfield_1651_PLFD1_062_CP.txt 339 Plain-text file with the extracted tune(s)
Tune-8676-get.log 4867 Log file, useful mostly for debugging
Tune-86760-TwentyNinthOfMay.abc 357 ABC music file with the extracted tune(s)
Tune-86760-TwentyNinthOfMay.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-86760-TwentyNinthOfMay.ps 33591 PostScript
Tune-86760-TwentyNinthOfMay.txt 357 Plain-text file with the extracted tune(s)
Tune-86760-get.log 5388 Log file, useful mostly for debugging
These files should be available for 24 hours.