pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3810-3323.ps) >>/Users/jc/w/tmp/Tune-3810-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/3323=Murphy_Delaney.abc2.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_38100.log 1138570 Log file, useful mostly for debugging
Form_38105.log 864 Log file, useful mostly for debugging
Tune-3810-3323.abc 808 ABC music file with the extracted tune(s)
Tune-3810-3323.ps 36992 PostScript
Tune-3810-3323.txt 808 Plain-text file with the extracted tune(s)
Tune-3810-get.log 4576 Log file, useful mostly for debugging
Tune-38100-get.log 8738 Log file, useful mostly for debugging
These files should be available for 24 hours.