Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/CSRCD/v2tune.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6400-v2tune.ps) >>/Users/jc/w/tmp/Tune-6400-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/CSRCD/v2tune.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_64004.log 732812 Log file, useful mostly for debugging
Form_64001.log 806 Log file, useful mostly for debugging
Tune-6400-get.log 3984 Log file, useful mostly for debugging
Tune-6400-v2tune.abc 144 ABC music file with the extracted tune(s)
Tune-6400-v2tune.ps 6 PostScript
Tune-6400-v2tune.txt 144 Plain-text file with the extracted tune(s)
Tune-64001-get.log 1341 Log file, useful mostly for debugging
Tune-64002-get.log 3817 Log file, useful mostly for debugging
Tune-64005-get.log 93642 Log file, useful mostly for debugging
Tune-64007-get.log 4779 Log file, useful mostly for debugging
These files should be available for 24 hours.