pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-68317-GoodNight.ps) >>/Users/jc/w/tmp/Tune-68317-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/KC/GoodNight.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-68317-GoodNight.abc 1271 ABC music file with the extracted tune(s)
Tune-68317-GoodNight.ps 41273 PostScript
Tune-68317-GoodNight.txt 1271 Plain-text file with the extracted tune(s)
Tune-68317-get.log 5562 Log file, useful mostly for debugging
These files should be available for 24 hours.