pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-73196-JennifersJig_D.ps) >>/Users/jc/w/tmp/Tune-73196-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Contra/jig/JennifersJig_D.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-73196-JennifersJig_D.abc 548 ABC music file with the extracted tune(s)
Tune-73196-JennifersJig_D.ps 36977 PostScript
Tune-73196-JennifersJig_D.txt 548 Plain-text file with the extracted tune(s)
Tune-73196-get.log 4246 Log file, useful mostly for debugging
These files should be available for 24 hours.