pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8791-Doubtful_Shepherd_THO4_011_The.ps) >>/Users/jc/w/tmp/Tune-8791-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Thompson/Doubtful_Shepherd_THO4_011_The.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-8791-Doubtful_Shepherd_THO4_011_The.abc 566 ABC music file with the extracted tune(s)
Tune-8791-Doubtful_Shepherd_THO4_011_The.ps 33751 PostScript
Tune-8791-Doubtful_Shepherd_THO4_011_The.txt 566 Plain-text file with the extracted tune(s)
Tune-8791-get.log 8166 Log file, useful mostly for debugging
Tune-87915-get.log 3074 Log file, useful mostly for debugging
Tune-87915-tune.abc 141 ABC music file with the extracted tune(s)
Tune-87915-tune.txt 141 Plain-text file with the extracted tune(s)
Tune-87917-get.log 139695 Log file, useful mostly for debugging
These files should be available for 24 hours.