pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4038-Tullamore_Piper-D-16-4.ps) >>/Users/jc/w/tmp/Tune-4038-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ONeills/hornpipe/Tullamore_Piper-D-16-4.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-4038-Tullamore_Piper-D-16-4.abc 511 ABC music file with the extracted tune(s)
Tune-4038-Tullamore_Piper-D-16-4.ps 35831 PostScript
Tune-4038-Tullamore_Piper-D-16-4.txt 511 Plain-text file with the extracted tune(s)
Tune-4038-get.log 8882 Log file, useful mostly for debugging
Tune-40382-get.log 1253 Log file, useful mostly for debugging
Tune-40385-get.log 3963 Log file, useful mostly for debugging
Tune-40387-get.log 4703 Log file, useful mostly for debugging
Tune-40389-get.log 5830 Log file, useful mostly for debugging
These files should be available for 24 hours.