pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2648-tunebook.ps) >>/Users/jc/w/tmp/Tune-2648-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_2648.log 66614 Log file, useful mostly for debugging
Coll_26487.log 280679 Log file, useful mostly for debugging
Tune-2648-get.log 5942 Log file, useful mostly for debugging
Tune-2648-tunebook.abc 671 ABC music file with the extracted tune(s)
Tune-2648-tunebook.ps 38700 PostScript
Tune-2648-tunebook.txt 671 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.