Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Book18/v3tune.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6354-v3tune.ps) >>/Users/jc/w/tmp/Tune-6354-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Book18/v3tune.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-6354-get.log 9880 Log file, useful mostly for debugging
Tune-6354-v3tune.abc 145 ABC music file with the extracted tune(s)
Tune-6354-v3tune.ps 6 PostScript
Tune-6354-v3tune.txt 145 Plain-text file with the extracted tune(s)
Tune-63540-get.log 6463 Log file, useful mostly for debugging
Tune-63542-get.log 1403 Log file, useful mostly for debugging
Tune-63543-get.log 5272 Log file, useful mostly for debugging
Tune-63544-get.log 84688 Log file, useful mostly for debugging
Tune-63546-get.log 1396 Log file, useful mostly for debugging
Tune-63548-get.log 3178 Log file, useful mostly for debugging
These files should be available for 24 hours.