pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6318-AbbeyThe.ps) >>/Users/jc/w/tmp/Tune-6318-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/contrib/Tunes/AbbeyThe.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
Tune-6318-AbbeyThe.abc 258 ABC music file with the extracted tune(s)
Tune-6318-AbbeyThe.ps 34900 PostScript
Tune-6318-AbbeyThe.txt 258 Plain-text file with the extracted tune(s)
Tune-6318-get.log 4227 Log file, useful mostly for debugging
Tune-63183-get.log 1522 Log file, useful mostly for debugging
Tune-63184-get.log 3047 Log file, useful mostly for debugging
These files should be available for 24 hours.