pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7873-561_Jefferson_and_Liberty.ps) >>/Users/jc/w/tmp/Tune-7873-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JohnTreat/GftF/561_Jefferson_and_Liberty.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_78739.log 643212 Log file, useful mostly for debugging
Tune-7873-561_Jefferson_and_Liberty.abc 676 ABC music file with the extracted tune(s)
Tune-7873-561_Jefferson_and_Liberty.ps 33403 PostScript
Tune-7873-561_Jefferson_and_Liberty.txt 676 Plain-text file with the extracted tune(s)
Tune-7873-get.log 14571 Log file, useful mostly for debugging
Tune-78730-get.log 5749 Log file, useful mostly for debugging
Tune-78734-get.log 8919 Log file, useful mostly for debugging
Tune-78736-get.log 5626 Log file, useful mostly for debugging
Tune-78737-get.log 6872 Log file, useful mostly for debugging
Tune-78738-get.log 10284 Log file, useful mostly for debugging
These files should be available for 24 hours.