pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-76587-8014_Nelsons_Maggot.ps) >>/Users/jc/w/tmp/Tune-76587-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JohnJohnson/8014_Nelsons_Maggot.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_76587.log 868 Log file, useful mostly for debugging
Tune-76587-8014_Nelsons_Maggot.abc 391 ABC music file with the extracted tune(s)
Tune-76587-8014_Nelsons_Maggot.ps 34111 PostScript
Tune-76587-8014_Nelsons_Maggot.txt 391 Plain-text file with the extracted tune(s)
Tune-76587-get.log 12775 Log file, useful mostly for debugging
These files should be available for 24 hours.