pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1728-StarryEyedLassie2.ps) >>/Users/jc/w/tmp/Tune-1728-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/StarryEyedLassie2.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_17285.log 285735 Log file, useful mostly for debugging
Coll_17286.log 284330 Log file, useful mostly for debugging
Tune-1728-StarryEyedLassie2.abc 2046 ABC music file with the extracted tune(s)
Tune-1728-StarryEyedLassie2.ps 49413 PostScript
Tune-1728-StarryEyedLassie2.txt 2046 Plain-text file with the extracted tune(s)
Tune-1728-get.log 5012 Log file, useful mostly for debugging
Tune-17281-get.log 4254 Log file, useful mostly for debugging
Tune-17282-get.log 1484 Log file, useful mostly for debugging
These files should be available for 24 hours.