pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8545-tunebook.ps) >>/Users/jc/w/tmp/Tune-8545-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_85450.log 133498 Log file, useful mostly for debugging
Form_85455.log 719 Log file, useful mostly for debugging
Tune-8545-get.log 86801 Log file, useful mostly for debugging
Tune-8545-tunebook.abc 460 ABC music file with the extracted tune(s)
Tune-8545-tunebook.ps 36832 PostScript
Tune-8545-tunebook.txt 460 Plain-text file with the extracted tune(s)
Tune-85452-get.log 5083 Log file, useful mostly for debugging
Tune-85455-get.log 1539 Log file, useful mostly for debugging
Tune-85459-get.log 2704 Log file, useful mostly for debugging
These files should be available for 24 hours.