Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/mp3/_.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9846-_.ps) >>/Users/jc/w/tmp/Tune-9846-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/mp3/_.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_98462.log 651612 Log file, useful mostly for debugging
Coll_98466.log 312811 Log file, useful mostly for debugging
Tune-9846-_.abc 137 ABC music file with the extracted tune(s)
Tune-9846-_.ps 6 PostScript
Tune-9846-_.txt 137 Plain-text file with the extracted tune(s)
Tune-9846-get.log 3871 Log file, useful mostly for debugging
Tune-98461-get.log 3374 Log file, useful mostly for debugging
Tune-98463-Gow-CSR4-abc2.abc 157 ABC music file with the extracted tune(s)
Tune-98463-Gow-CSR4-abc2.txt 157 Plain-text file with the extracted tune(s)
Tune-98463-get.log 3282 Log file, useful mostly for debugging
These files should be available for 24 hours.