Mismatch: X:4491 doesn't match requested X:5379
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3654-tunebook.ps) >>/Users/jc/w/tmp/Tune-3654-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
Coll_36549.log 285165 Log file, useful mostly for debugging
Find_36545.log 1719 Log file, useful mostly for debugging
Form_36541.log 899 Log file, useful mostly for debugging
Tune-3654-get.log 2887926 Log file, useful mostly for debugging
Tune-3654-tunebook.abc 499 ABC music file with the extracted tune(s)
Tune-3654-tunebook.ps 33908 PostScript
Tune-3654-tunebook.txt 499 Plain-text file with the extracted tune(s)
Tune-36543-get.log 86096 Log file, useful mostly for debugging
Tune-36547-get.log 3485 Log file, useful mostly for debugging
These files should be available for 24 hours.