pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-57454-091_Plough_Tune.ps) >>/Users/jc/w/tmp/Tune-57454-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/HibernianMuse/091_Plough_Tune.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-57454-091_Plough_Tune.abc 1266 ABC music file with the extracted tune(s)
Tune-57454-091_Plough_Tune.ps 42280 PostScript
Tune-57454-091_Plough_Tune.txt 1266 Plain-text file with the extracted tune(s)
Tune-57454-get.log 4649 Log file, useful mostly for debugging
These files should be available for 24 hours.