Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/JJC/book_of_rights.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6480-book_of_rights.ps) >>/Users/jc/w/tmp/Tune-6480-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JJC/book_of_rights.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_6480.log 494731 Log file, useful mostly for debugging
Form_64802.log 911 Log file, useful mostly for debugging
Tune-6480-book_of_rights.abc 150 ABC music file with the extracted tune(s)
Tune-6480-book_of_rights.ps 6 PostScript
Tune-6480-book_of_rights.txt 150 Plain-text file with the extracted tune(s)
Tune-6480-get.log 9635 Log file, useful mostly for debugging
Tune-64800-get.log 103446 Log file, useful mostly for debugging
Tune-64806-get.log 4833 Log file, useful mostly for debugging
Tune-64808-get.log 28507 Log file, useful mostly for debugging
Tune-64809-get.log 3082 Log file, useful mostly for debugging
These files should be available for 24 hours.