Mismatch: X:4008 doesn't match requested X:7685
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-97314-tunebook.ps) >>/Users/jc/w/tmp/Tune-97314-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/tunebook.org.uk/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-97314-get.log 2933950 Log file, useful mostly for debugging
Tune-97314-tunebook.abc 470 ABC music file with the extracted tune(s)
Tune-97314-tunebook.ps 33611 PostScript
Tune-97314-tunebook.txt 470 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.