pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1633-WilliamClarketunes.ps) >>/Users/jc/w/tmp/Tune-1633-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/maryhumphreys.co.uk/WilliamClarketunes.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_16330.log 260559 Log file, useful mostly for debugging
Tune-1633-WilliamClarketunes.abc 384 ABC music file with the extracted tune(s)
Tune-1633-WilliamClarketunes.ps 33914 PostScript
Tune-1633-WilliamClarketunes.txt 384 Plain-text file with the extracted tune(s)
Tune-1633-get.log 52727 Log file, useful mostly for debugging
These files should be available for 24 hours.