pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-83591-tunebook.ps) >>/Users/jc/w/tmp/Tune-83591-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
Coll_83591.log 137362 Log file, useful mostly for debugging
Tune-83591-get.log 4306 Log file, useful mostly for debugging
Tune-83591-tunebook.abc 333 ABC music file with the extracted tune(s)
Tune-83591-tunebook.ps 33137 PostScript
Tune-83591-tunebook.txt 333 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.