Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book44/band8.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3118-band8.ps) >>/Users/jc/w/tmp/Tune-3118-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book44/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
Coll_31183.log 293209 Log file, useful mostly for debugging
Tune-3118-band8.abc 144 ABC music file with the extracted tune(s)
Tune-3118-band8.ps 6 PostScript
Tune-3118-band8.txt 144 Plain-text file with the extracted tune(s)
Tune-3118-get.log 13388 Log file, useful mostly for debugging
Tune-31181-get.log 3650 Log file, useful mostly for debugging
Tune-31182-get.log 12275 Log file, useful mostly for debugging
Tune-31184-get.log 4110 Log file, useful mostly for debugging
Tune-31186-get.log 5482 Log file, useful mostly for debugging
Tune-31188-get.log 4334 Log file, useful mostly for debugging
These files should be available for 24 hours.