pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1642-Watchmaker_1539-Am-16-2.ps) >>/Users/jc/w/tmp/Tune-1642-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ONeills/reel/Watchmaker_1539-Am-16-2.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_16428.log 992 Log file, useful mostly for debugging
Tune-1642-Watchmaker_1539-Am-16-2.abc 512 ABC music file with the extracted tune(s)
Tune-1642-Watchmaker_1539-Am-16-2.ps 35754 PostScript
Tune-1642-Watchmaker_1539-Am-16-2.txt 512 Plain-text file with the extracted tune(s)
Tune-1642-get.log 5355 Log file, useful mostly for debugging
Tune-16423-get.log 5460 Log file, useful mostly for debugging
Tune-16425-get.log 3943 Log file, useful mostly for debugging
These files should be available for 24 hours.