pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-11156-SallyLightfootJig1.ps) >>/Users/jc/w/tmp/Tune-11156-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/SallyLightfootJig1.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-11156-BobOfFettercairn0.abc 718 ABC music file with the extracted tune(s)
Tune-11156-BobOfFettercairn0.ps 36096 PostScript
Tune-11156-BobOfFettercairn0.txt 718 Plain-text file with the extracted tune(s)
Tune-11156-SallyLightfootJig1.abc 2363 ABC music file with the extracted tune(s)
Tune-11156-SallyLightfootJig1.ps 53154 PostScript
Tune-11156-SallyLightfootJig1.txt 2363 Plain-text file with the extracted tune(s)
Tune-11156-get.log 10088 Log file, useful mostly for debugging
These files should be available for 24 hours.