pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6498-tunebook.ps) >>/Users/jc/w/tmp/Tune-6498-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_64980.log 65264 Log file, useful mostly for debugging
Coll_64985.log 254269 Log file, useful mostly for debugging
Coll_64989.log 128908 Log file, useful mostly for debugging
Form_64986.log 720 Log file, useful mostly for debugging
Tune-6498-get.log 4347 Log file, useful mostly for debugging
Tune-6498-tunebook.abc 427 ABC music file with the extracted tune(s)
Tune-6498-tunebook.ps 34409 PostScript
Tune-6498-tunebook.txt 427 Plain-text file with the extracted tune(s)
Tune-64981-get.log 3242 Log file, useful mostly for debugging
Tune-64983-get.log 3364 Log file, useful mostly for debugging
Tune-64984-get.log 4232 Log file, useful mostly for debugging
Tune-64985-get.log 2927 Log file, useful mostly for debugging
Tune-64986-get.log 3738 Log file, useful mostly for debugging
Tune-64987-get.log 3464 Log file, useful mostly for debugging
These files should be available for 24 hours.