pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8337-DickGossipsR4.ps) >>/Users/jc/w/tmp/Tune-8337-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Contra/KC/reel/DickGossipsR4.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_83372.log 263379 Log file, useful mostly for debugging
Tune-8337-DickGossipsR4.abc 816 ABC music file with the extracted tune(s)
Tune-8337-DickGossipsR4.ps 36020 PostScript
Tune-8337-DickGossipsR4.txt 816 Plain-text file with the extracted tune(s)
Tune-8337-get.log 4725 Log file, useful mostly for debugging
These files should be available for 24 hours.