pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-337-20510_.ps) >>/Users/jc/w/tmp/Tune-337-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MoF/20510_.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_33700.log 314464 Log file, useful mostly for debugging
Coll_33719.log 318823 Log file, useful mostly for debugging
Coll_33732.log 374413 Log file, useful mostly for debugging
Coll_33747.log 373323 Log file, useful mostly for debugging
Coll_33769.log 373323 Log file, useful mostly for debugging
Coll_33782.log 372234 Log file, useful mostly for debugging
Form_33713.log 807 Log file, useful mostly for debugging
Form_33760.log 837 Log file, useful mostly for debugging
Form_33795.log 816 Log file, useful mostly for debugging
Tune-337-20510_.abc 33 ABC music file with the extracted tune(s)
Tune-337-20510_.ps 6 PostScript
Tune-337-20510_.txt 33 Plain-text file with the extracted tune(s)
Tune-337-get.log 3825 Log file, useful mostly for debugging
These files should be available for 24 hours.