pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-82856-Now_Is_The_Month_Of_Maying.ps) >>/Users/jc/w/tmp/Tune-82856-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/src/jcabc2ps/abc/Now_Is_The_Month_Of_Maying.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-82856-Now_Is_The_Month_Of_Maying.abc 1156 ABC music file with the extracted tune(s)
Tune-82856-Now_Is_The_Month_Of_Maying.ps 43361 PostScript
Tune-82856-Now_Is_The_Month_Of_Maying.txt 1156 Plain-text file with the extracted tune(s)
Tune-82856-get.log 4845 Log file, useful mostly for debugging
These files should be available for 24 hours.