pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8880-2250_Jig.ps) >>/Users/jc/w/tmp/Tune-8880-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr/MM2/2250_Jig.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_88802.log 500412 Log file, useful mostly for debugging
Tune-8880-2250_Jig.abc 414 ABC music file with the extracted tune(s)
Tune-8880-2250_Jig.ps 33927 PostScript
Tune-8880-2250_Jig.txt 414 Plain-text file with the extracted tune(s)
Tune-8880-get.log 10960 Log file, useful mostly for debugging
Tune-88800-get.log 2894071 Log file, useful mostly for debugging
Tune-88802-get.log 3418 Log file, useful mostly for debugging
Tune-88803-get.log 4774 Log file, useful mostly for debugging
Tune-88804-get.log 7564 Log file, useful mostly for debugging
Tune-88805-Gow-CSR2-abc1.abc 150 ABC music file with the extracted tune(s)
Tune-88805-Gow-CSR2-abc1.ps 6 PostScript
Tune-88805-Gow-CSR2-abc1.txt 150 Plain-text file with the extracted tune(s)
Tune-88805-get.log 4052 Log file, useful mostly for debugging
Tune-88806-get.log 4488 Log file, useful mostly for debugging
Tune-88807-get.log 3408 Log file, useful mostly for debugging
These files should be available for 24 hours.