pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-93340-Air_3.ps) >>/Users/jc/w/tmp/Tune-93340-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Perron-Miller/Air_3.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-93340-Air_3.abc 570 ABC music file with the extracted tune(s)
Tune-93340-Air_3.ps 34805 PostScript
Tune-93340-Air_3.txt 570 Plain-text file with the extracted tune(s)
Tune-93340-get.log 10600 Log file, useful mostly for debugging
These files should be available for 24 hours.