Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1798/DanielWright_CCCCD.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-154-DanielWright_CCCCD.ps) >>/Users/jc/w/tmp/Tune-154-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1798/DanielWright_CCCCD.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_15407.log 338853 Log file, useful mostly for debugging
Coll_15419.log 279209 Log file, useful mostly for debugging
Coll_15432.log 283412 Log file, useful mostly for debugging
Coll_15444.log 284808 Log file, useful mostly for debugging
Coll_15455.log 280610 Log file, useful mostly for debugging
Coll_15467.log 0 Log file, useful mostly for debugging
Coll_15477.log 280612 Log file, useful mostly for debugging
Coll_15488.log 338852 Log file, useful mostly for debugging
Tune-154-DanielWright_CCCCD.abc 155 ABC music file with the extracted tune(s)
Tune-154-DanielWright_CCCCD.ps 6 PostScript
Tune-154-DanielWright_CCCCD.txt 155 Plain-text file with the extracted tune(s)
Tune-154-get.log 4217 Log file, useful mostly for debugging
Tune-15417-get.log 3869 Log file, useful mostly for debugging
Tune-15420-get.log 4390 Log file, useful mostly for debugging
Tune-15427-get.log 4828 Log file, useful mostly for debugging
Tune-15437-get.log 4375 Log file, useful mostly for debugging
Tune-15438-get.log 4390 Log file, useful mostly for debugging
Tune-15451-get.log 4574 Log file, useful mostly for debugging
Tune-15453-get.log 3974 Log file, useful mostly for debugging
Tune-15460-get.log 4156 Log file, useful mostly for debugging
Tune-15468-get.log 4137 Log file, useful mostly for debugging
Tune-15479-get.log 4137 Log file, useful mostly for debugging
Tune-15482-get.log 4453 Log file, useful mostly for debugging
Tune-15486-get.log 3616 Log file, useful mostly for debugging
Tune-15495-get.log 5002 Log file, useful mostly for debugging
These files should be available for 24 hours.