pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7592-PolharrowBurn.ps) >>/Users/jc/w/tmp/Tune-7592-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/Scotland/PolharrowBurn.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_75922.log 395329 Log file, useful mostly for debugging
Tune-7592-PolharrowBurn.abc 2857 ABC music file with the extracted tune(s)
Tune-7592-PolharrowBurn.ps 45258 PostScript
Tune-7592-PolharrowBurn.txt 2857 Plain-text file with the extracted tune(s)
Tune-7592-get.log 4885 Log file, useful mostly for debugging
These files should be available for 24 hours.