pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-25375-DeGolyerHornpipe.ps) >>/Users/jc/w/tmp/Tune-25375-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ryan-cole/Tunes/DeGolyerHornpipe.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_25375.log 422020 Log file, useful mostly for debugging
Tune-25375-DeGolyerHornpipe.abc 376 ABC music file with the extracted tune(s)
Tune-25375-DeGolyerHornpipe.ps 36140 PostScript
Tune-25375-DeGolyerHornpipe.txt 376 Plain-text file with the extracted tune(s)
Tune-25375-get.log 9048 Log file, useful mostly for debugging
These files should be available for 24 hours.