pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-61643-Jefferson_and_Liberty3.ps) >>/Users/jc/w/tmp/Tune-61643-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/program/Jefferson_and_Liberty3.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-61643-Jefferson_and_Liberty3.abc 2697 ABC music file with the extracted tune(s)
Tune-61643-Jefferson_and_Liberty3.ps 51136 PostScript
Tune-61643-Jefferson_and_Liberty3.txt 2697 Plain-text file with the extracted tune(s)
Tune-61643-get.log 5020 Log file, useful mostly for debugging
These files should be available for 24 hours.