pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-66290-Katharine_street.ps) >>/Users/jc/w/tmp/Tune-66290-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JohnWalsh/Katharine_street.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_66290.log 451411 Log file, useful mostly for debugging
Tune-66290-Katharine_street.abc 1110 ABC music file with the extracted tune(s)
Tune-66290-Katharine_street.ps 34501 PostScript
Tune-66290-Katharine_street.txt 1110 Plain-text file with the extracted tune(s)
Tune-66290-get.log 4548 Log file, useful mostly for debugging
These files should be available for 24 hours.