pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7759-BrooksideHornpipe.ps) >>/Users/jc/w/tmp/Tune-7759-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ryan-cole/Tunes/BrooksideHornpipe.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_7759.log 377060 Log file, useful mostly for debugging
Coll_77593.log 344745 Log file, useful mostly for debugging
Tune-7759-BrooksideHornpipe.abc 512 ABC music file with the extracted tune(s)
Tune-7759-BrooksideHornpipe.ps 38237 PostScript
Tune-7759-BrooksideHornpipe.txt 512 Plain-text file with the extracted tune(s)
Tune-7759-get.log 4668 Log file, useful mostly for debugging
Tune-77590-get.log 4883 Log file, useful mostly for debugging
Tune-77596-get.log 3292 Log file, useful mostly for debugging
Tune-77598-get.log 4749 Log file, useful mostly for debugging
Tune-77599-get.log 7444 Log file, useful mostly for debugging
These files should be available for 24 hours.