pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6484-Daniel_ODaly-D-16-2.ps) >>/Users/jc/w/tmp/Tune-6484-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ONeills/air/Daniel_ODaly-D-16-2.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-6484-Daniel_ODaly-D-16-2.abc 546 ABC music file with the extracted tune(s)
Tune-6484-Daniel_ODaly-D-16-2.ps 35019 PostScript
Tune-6484-Daniel_ODaly-D-16-2.txt 546 Plain-text file with the extracted tune(s)
Tune-6484-get.log 9008 Log file, useful mostly for debugging
Tune-64841-get.log 3912 Log file, useful mostly for debugging
Tune-64843-get.log 1398 Log file, useful mostly for debugging
Tune-64846-get.log 3252 Log file, useful mostly for debugging
Tune-64847-get.log 9354 Log file, useful mostly for debugging
These files should be available for 24 hours.