pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-76108-v4.ps) >>/Users/jc/w/tmp/Tune-76108-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/GoldenBookOfFavoriteSongs/v4.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-76108-get.log 4523 Log file, useful mostly for debugging
Tune-76108-v4.abc 538 ABC music file with the extracted tune(s)
Tune-76108-v4.ps 30868 PostScript
Tune-76108-v4.txt 538 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.