pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1057-Blind_Billy-A-16-3.ps) >>/Users/jc/w/tmp/Tune-1057-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ONeills/slipjig/Blind_Billy-A-16-3.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_10578.log 533481 Log file, useful mostly for debugging
Tune-1057-Blind_Billy-A-16-3.abc 424 ABC music file with the extracted tune(s)
Tune-1057-Blind_Billy-A-16-3.ps 34278 PostScript
Tune-1057-Blind_Billy-A-16-3.txt 424 Plain-text file with the extracted tune(s)
Tune-1057-get.log 4667 Log file, useful mostly for debugging
Tune-10576-get.log 4654 Log file, useful mostly for debugging
These files should be available for 24 hours.