Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/CCCCD2/band8.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6200-band8.ps) >>/Users/jc/w/tmp/Tune-6200-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/CCCCD2/band8.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-6200-band8.abc 144 ABC music file with the extracted tune(s)
Tune-6200-band8.ps 6 PostScript
Tune-6200-band8.txt 144 Plain-text file with the extracted tune(s)
Tune-6200-get.log 19750 Log file, useful mostly for debugging
Tune-62002-get.log 4646 Log file, useful mostly for debugging
Tune-62003-get.log 3334 Log file, useful mostly for debugging
Tune-62004-get.log 3260 Log file, useful mostly for debugging
Tune-62005-get.log 1336 Log file, useful mostly for debugging
Tune-62006-get.log 4830 Log file, useful mostly for debugging
Tune-62007-get.log 5311 Log file, useful mostly for debugging
Tune-62008-get.log 5451 Log file, useful mostly for debugging
Tune-62009-get.log 7811 Log file, useful mostly for debugging
These files should be available for 24 hours.