pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6274-NationalGuardsHornpipe.ps) >>/Users/jc/w/tmp/Tune-6274-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ryan-cole/Tunes/NationalGuardsHornpipe.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_62741.log 283412 Log file, useful mostly for debugging
Coll_62748.log 157116 Log file, useful mostly for debugging
Coll_62749.log 604011 Log file, useful mostly for debugging
Tune-6274-NationalGuardsHornpipe.abc 656 ABC music file with the extracted tune(s)
Tune-6274-NationalGuardsHornpipe.ps 38211 PostScript
Tune-6274-NationalGuardsHornpipe.txt 656 Plain-text file with the extracted tune(s)
Tune-6274-get.log 5529 Log file, useful mostly for debugging
Tune-62740-get.log 4368 Log file, useful mostly for debugging
Tune-62742-get.log 8527 Log file, useful mostly for debugging
Tune-62744-get.log 3688 Log file, useful mostly for debugging
Tune-62748-get.log 9881 Log file, useful mostly for debugging
Tune-62749-get.log 8584 Log file, useful mostly for debugging
These files should be available for 24 hours.