pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-94851-proto.ps) >>/Users/jc/w/tmp/Tune-94851-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/MSRPB/proto.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Form_94851.log 831 Log file, useful mostly for debugging
Tune-94851-get.log 4401 Log file, useful mostly for debugging
Tune-94851-proto.abc 474 ABC music file with the extracted tune(s)
Tune-94851-proto.ps 31008 PostScript
Tune-94851-proto.txt 474 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.