pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2790-OldMole.ps) >>/Users/jc/w/tmp/Tune-2790-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/OldMole.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-2790-Barry_Priddey.abc 1489 ABC music file with the extracted tune(s)
Tune-2790-Barry_Priddey.ps 43137 PostScript
Tune-2790-Barry_Priddey.txt 1489 Plain-text file with the extracted tune(s)
Tune-2790-OldMole.abc 236 ABC music file with the extracted tune(s)
Tune-2790-OldMole.ps 32243 PostScript
Tune-2790-OldMole.txt 236 Plain-text file with the extracted tune(s)
Tune-2790-get.log 8854 Log file, useful mostly for debugging
These files should be available for 24 hours.