pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4079-002.ps) >>/Users/jc/w/tmp/Tune-4079-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EverydaySongBook/002=Sleep_Baby_Sleep-V2.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-4079-002.abc 1902 ABC music file with the extracted tune(s)
Tune-4079-002.ps 41356 PostScript
Tune-4079-002.txt 1902 Plain-text file with the extracted tune(s)
Tune-4079-get.log 5011 Log file, useful mostly for debugging
Tune-40790-all.abc 173 ABC music file with the extracted tune(s)
Tune-40790-all.txt 173 Plain-text file with the extracted tune(s)
Tune-40790-get.log 3214 Log file, useful mostly for debugging
Tune-40799-get.log 5872 Log file, useful mostly for debugging
These files should be available for 24 hours.