pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6869-20570_.ps) >>/Users/jc/w/tmp/Tune-6869-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MoF/20570_.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_68691.log 151853 Log file, useful mostly for debugging
Tune-6869-20570_.abc 33 ABC music file with the extracted tune(s)
Tune-6869-20570_.ps 6 PostScript
Tune-6869-20570_.txt 33 Plain-text file with the extracted tune(s)
Tune-6869-get.log 3840 Log file, useful mostly for debugging
These files should be available for 24 hours.