Mismatch: X:162 doesn't match requested X:6362
X:6362 not found in http://richardrobinson.tunebook.org.uk/data/tunebook.abc
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-81728-tunebook.ps) >>/Users/jc/w/tmp/Tune-81728-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
Tune-81728-get.log 3535675 Log file, useful mostly for debugging
Tune-81728-tunebook.abc 0 ABC music file with the extracted tune(s)
Tune-81728-tunebook.ps 6 PostScript
Tune-81728-tunebook.txt 0 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.