pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-25990-LadysBreistKnot.ps) >>/Users/jc/w/tmp/Tune-25990-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/Scotland/LadysBreistKnot.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-25990-Danny_Boy.abc 3486 ABC music file with the extracted tune(s)
Tune-25990-Danny_Boy.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-25990-Danny_Boy.ps 56359 PostScript
Tune-25990-Danny_Boy.txt 3486 Plain-text file with the extracted tune(s)
Tune-25990-LadysBreistKnot.abc 660 ABC music file with the extracted tune(s)
Tune-25990-LadysBreistKnot.ps 34840 PostScript
Tune-25990-LadysBreistKnot.txt 660 Plain-text file with the extracted tune(s)
Tune-25990-get.log 10552 Log file, useful mostly for debugging
These files should be available for 24 hours.