pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-10006-Whish.ps) >>/Users/jc/w/tmp/Tune-10006-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Playford/Whish.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-10006-Whish.abc 205 ABC music file with the extracted tune(s)
Tune-10006-Whish.ps 32004 PostScript
Tune-10006-Whish.txt 205 Plain-text file with the extracted tune(s)
Tune-10006-all.abc 175 ABC music file with the extracted tune(s)
Tune-10006-all.pdf 2217 Portable Data Format
Tune-10006-all.ps 6 PostScript
Tune-10006-all.txt 175 Plain-text file with the extracted tune(s)
Tune-10006-get.log 9193 Log file, useful mostly for debugging
These files should be available for 24 hours.