pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-59972-tangerine.ps) >>/Users/jc/w/tmp/Tune-59972-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/jazz/tangerine.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_59972.log 268010 Log file, useful mostly for debugging
Tune-59972-get.log 4358 Log file, useful mostly for debugging
Tune-59972-tangerine.abc 1292 ABC music file with the extracted tune(s)
Tune-59972-tangerine.ps 39659 PostScript
Tune-59972-tangerine.txt 1292 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.