pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-99587-Staines_Morris_NMD.ps) >>/Users/jc/w/tmp/Tune-99587-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/Staines_Morris_NMD.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-99587-Daphne_1.abc 1048 ABC music file with the extracted tune(s)
Tune-99587-Daphne_1.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-99587-Daphne_1.ps 34765 PostScript
Tune-99587-Daphne_1.txt 1048 Plain-text file with the extracted tune(s)
Tune-99587-Staines_Morris_NMD.abc 424 ABC music file with the extracted tune(s)
Tune-99587-Staines_Morris_NMD.ps 33009 PostScript
Tune-99587-Staines_Morris_NMD.txt 424 Plain-text file with the extracted tune(s)
Tune-99587-get.log 9781 Log file, useful mostly for debugging
These files should be available for 24 hours.