pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-64368-Bob_McQuillen_book15.ps) >>/Users/jc/w/tmp/Tune-64368-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/by/Bob_McQuillen_book15.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-64368-Bob_McQuillen_book15.abc 80803 ABC music file with the extracted tune(s)
Tune-64368-Bob_McQuillen_book15.ps 660620 PostScript
Tune-64368-Bob_McQuillen_book15.txt 80803 Plain-text file with the extracted tune(s)
Tune-64368-get.log 73468 Log file, useful mostly for debugging
These files should be available for 24 hours.