pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8289-tunebook.ps) >>/Users/jc/w/tmp/Tune-8289-get.log 2>&1" returned status 256
http://richardrobinson.tunebook.org.uk/data/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
Form_82896.log 732 Log file, useful mostly for debugging
Form_82897.log 767 Log file, useful mostly for debugging
Tune-8289-get.log 7967 Log file, useful mostly for debugging
Tune-8289-tunebook.abc 519 ABC music file with the extracted tune(s)
Tune-8289-tunebook.ps 34719 PostScript
Tune-8289-tunebook.txt 519 Plain-text file with the extracted tune(s)
Tune-82894-get.log 3503 Log file, useful mostly for debugging
These files should be available for 24 hours.