pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7856-VelocipedeHornpipe.ps) >>/Users/jc/w/tmp/Tune-7856-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ryan-cole/Tunes/VelocipedeHornpipe.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-7856-VelocipedeHornpipe.abc 703 ABC music file with the extracted tune(s)
Tune-7856-VelocipedeHornpipe.ps 38866 PostScript
Tune-7856-VelocipedeHornpipe.txt 703 Plain-text file with the extracted tune(s)
Tune-7856-get.log 10256 Log file, useful mostly for debugging
Tune-78562-get.log 4967 Log file, useful mostly for debugging
Tune-78564-get.log 5433 Log file, useful mostly for debugging
Tune-78567-get.log 4406 Log file, useful mostly for debugging
These files should be available for 24 hours.