pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9423-ShipOGrace.ps) >>/Users/jc/w/tmp/Tune-9423-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/ShipOGrace.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_94232.log 287140 Log file, useful mostly for debugging
Tune-9423-ShipOGrace.abc 1727 ABC music file with the extracted tune(s)
Tune-9423-ShipOGrace.ps 48657 PostScript
Tune-9423-ShipOGrace.txt 1727 Plain-text file with the extracted tune(s)
Tune-9423-get.log 4784 Log file, useful mostly for debugging
Tune-94231-get.log 4472 Log file, useful mostly for debugging
These files should be available for 24 hours.