pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-19046-JeffersonAndLiberty3.ps) >>/Users/jc/w/tmp/Tune-19046-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/program/JeffersonAndLiberty3.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-19046-JeffersonAndLiberty3.abc 3173 ABC music file with the extracted tune(s)
Tune-19046-JeffersonAndLiberty3.ps 51262 PostScript
Tune-19046-JeffersonAndLiberty3.txt 3173 Plain-text file with the extracted tune(s)
Tune-19046-get.log 4878 Log file, useful mostly for debugging
These files should be available for 24 hours.