pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-85471-3053-Bonny_Charlie.ps) >>/Users/jc/w/tmp/Tune-85471-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Gow/CR/3053-Bonny_Charlie.abc1.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-85471-3053-Bonny_Charlie.abc 1435 ABC music file with the extracted tune(s)
Tune-85471-3053-Bonny_Charlie.ps 46217 PostScript
Tune-85471-3053-Bonny_Charlie.txt 1435 Plain-text file with the extracted tune(s)
Tune-85471-get.log 4804 Log file, useful mostly for debugging
These files should be available for 24 hours.