pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-27866-Green_Fields_of_America.ps) >>/Users/jc/w/tmp/Tune-27866-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Nelson/Green_Fields_of_America.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_27866.log 1104 Log file, useful mostly for debugging
Tune-27866-Green_Fields_of_America.abc 513 ABC music file with the extracted tune(s)
Tune-27866-Green_Fields_of_America.ps 36713 PostScript
Tune-27866-Green_Fields_of_America.txt 513 Plain-text file with the extracted tune(s)
Tune-27866-get.log 4760 Log file, useful mostly for debugging
These files should be available for 24 hours.