pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8873-tunebook.ps) >>/Users/jc/w/tmp/Tune-8873-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_88738.log 262609 Log file, useful mostly for debugging
Find_88739.log 3090 Log file, useful mostly for debugging
Tune-8873-get.log 4287 Log file, useful mostly for debugging
Tune-8873-tunebook.abc 843 ABC music file with the extracted tune(s)
Tune-8873-tunebook.ps 37216 PostScript
Tune-8873-tunebook.txt 843 Plain-text file with the extracted tune(s)
Tune-88731-get.log 7309 Log file, useful mostly for debugging
Tune-88732-get.log 6257 Log file, useful mostly for debugging
Tune-88736-get.log 1384 Log file, useful mostly for debugging
Tune-88737-get.log 1990 Log file, useful mostly for debugging
These files should be available for 24 hours.