pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-20277-v4.ps) >>/Users/jc/w/tmp/Tune-20277-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EverydaySongBook/v4.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-20277-get.log 8114 Log file, useful mostly for debugging
Tune-20277-v4.abc 494 ABC music file with the extracted tune(s)
Tune-20277-v4.ps 30881 PostScript
Tune-20277-v4.txt 494 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.