pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-26949-New_Moon-G-32-2.ps) >>/Users/jc/w/tmp/Tune-26949-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ONeills/hornpipe/New_Moon-G-32-2.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_26949.log 1241331 Log file, useful mostly for debugging
Tune-26949-New_Moon-G-32-2.abc 488 ABC music file with the extracted tune(s)
Tune-26949-New_Moon-G-32-2.ps 34697 PostScript
Tune-26949-New_Moon-G-32-2.txt 488 Plain-text file with the extracted tune(s)
Tune-26949-get.log 4624 Log file, useful mostly for debugging
These files should be available for 24 hours.