pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-33331-ABC.ps) >>/Users/jc/w/tmp/Tune-33331-get.log 2>&1" returned status 256
http://www.colinhume.com/ABC.txt

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-33331-ABC.abc 553 ABC music file with the extracted tune(s)
Tune-33331-ABC.ps 38245 PostScript
Tune-33331-ABC.txt 553 Plain-text file with the extracted tune(s)
Tune-33331-get.log 7039 Log file, useful mostly for debugging
These files should be available for 24 hours.