pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-73471-Whim.ps) >>/Users/jc/w/tmp/Tune-73471-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Thompson/Whim.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-73471-2008_Mrs_Forbes.abc 367 ABC music file with the extracted tune(s)
Tune-73471-2008_Mrs_Forbes.pdf 10069 Portable Data Format
Tune-73471-2008_Mrs_Forbes.ps 33685 PostScript
Tune-73471-2008_Mrs_Forbes.txt 367 Plain-text file with the extracted tune(s)
Tune-73471-Whim.abc 406 ABC music file with the extracted tune(s)
Tune-73471-Whim.ps 32723 PostScript
Tune-73471-Whim.txt 406 Plain-text file with the extracted tune(s)
Tune-73471-get.log 9719 Log file, useful mostly for debugging
These files should be available for 24 hours.