pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-86908-SawneyJockey_PLFD1679_234.ps) >>/Users/jc/w/tmp/Tune-86908-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/SawneyJockey_PLFD1679_234.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-86908-SawneyJockey_PLFD1679_234.abc 493 ABC music file with the extracted tune(s)
Tune-86908-SawneyJockey_PLFD1679_234.ps 35111 PostScript
Tune-86908-SawneyJockey_PLFD1679_234.txt 493 Plain-text file with the extracted tune(s)
Tune-86908-get.log 6082 Log file, useful mostly for debugging
These files should be available for 24 hours.