pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-38656-tunebook.ps) >>/Users/jc/w/tmp/Tune-38656-get.log 2>&1" returned status 256
http://richardrobinson.tunebook.org.uk/data/tunebook.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
Form_38656.log 726 Log file, useful mostly for debugging
Tune-38656-get.log 4530 Log file, useful mostly for debugging
Tune-38656-tunebook.abc 629 ABC music file with the extracted tune(s)
Tune-38656-tunebook.ps 36240 PostScript
Tune-38656-tunebook.txt 629 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.