pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-39228-Sweet_Passio___.ps) >>/Users/jc/w/tmp/Tune-39228-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/LM/Sweet_Passio___.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-39228-Sweet_Passio___.abc 763 ABC music file with the extracted tune(s)
Tune-39228-Sweet_Passio___.ps 33298 PostScript
Tune-39228-Sweet_Passio___.txt 763 Plain-text file with the extracted tune(s)
Tune-39228-get.log 5011 Log file, useful mostly for debugging
These files should be available for 24 hours.