pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2715-Blakes_Hornpipe_1_Bb.ps) >>/Users/jc/w/tmp/Tune-2715-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/hornpipe/Blakes_Hornpipe_1_Bb.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_27158.log 424830 Log file, useful mostly for debugging
Coll_27159.log 431855 Log file, useful mostly for debugging
Tune-2715-Blakes_Hornpipe_1_Bb.abc 472 ABC music file with the extracted tune(s)
Tune-2715-Blakes_Hornpipe_1_Bb.ps 35202 PostScript
Tune-2715-Blakes_Hornpipe_1_Bb.txt 472 Plain-text file with the extracted tune(s)
Tune-2715-get.log 4754 Log file, useful mostly for debugging
Tune-27150-get.log 4833 Log file, useful mostly for debugging
Tune-27151-get.log 3354 Log file, useful mostly for debugging
Tune-27155-get.log 4216 Log file, useful mostly for debugging
Tune-27156-get.log 4847 Log file, useful mostly for debugging
Tune-27157-get.log 6547 Log file, useful mostly for debugging
These files should be available for 24 hours.