pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-75273-Book52.ps) >>/Users/jc/w/tmp/Tune-75273-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/Book52.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-75273-Book52.abc 618 ABC music file with the extracted tune(s)
Tune-75273-Book52.ps 38569 PostScript
Tune-75273-Book52.txt 618 Plain-text file with the extracted tune(s)
Tune-75273-get.log 4163 Log file, useful mostly for debugging
These files should be available for 24 hours.