pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-68975-tunes.ps) >>/Users/jc/w/tmp/Tune-68975-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1771/Randall/tunes.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-68975-get.log 4202 Log file, useful mostly for debugging
Tune-68975-tunes.abc 514 ABC music file with the extracted tune(s)
Tune-68975-tunes.ps 33337 PostScript
Tune-68975-tunes.txt 514 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.