pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-75095-Vol7.ps) >>/Users/jc/w/tmp/Tune-75095-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/lewesarmsfolkclub.org/Vol7.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-75095-Vol7.abc 332 ABC music file with the extracted tune(s)
Tune-75095-Vol7.ps 34932 PostScript
Tune-75095-Vol7.txt 332 Plain-text file with the extracted tune(s)
Tune-75095-get.log 10919 Log file, useful mostly for debugging
These files should be available for 24 hours.