pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-52562-Black_Joke.ps) >>/Users/jc/w/tmp/Tune-52562-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Thompson/Black_Joke.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-52562-10601_Favorite_Scotch_Hornpipe.abc 719 ABC music file with the extracted tune(s)
Tune-52562-10601_Favorite_Scotch_Hornpipe.pdf 15143 Portable Data Format
Tune-52562-10601_Favorite_Scotch_Hornpipe.ps 36916 PostScript
Tune-52562-10601_Favorite_Scotch_Hornpipe.txt 719 Plain-text file with the extracted tune(s)
Tune-52562-Black_Joke.abc 505 ABC music file with the extracted tune(s)
Tune-52562-Black_Joke.ps 33292 PostScript
Tune-52562-Black_Joke.txt 505 Plain-text file with the extracted tune(s)
Tune-52562-get.log 10547 Log file, useful mostly for debugging
These files should be available for 24 hours.