Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book22/CTftF.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2438-CTftF.ps) >>/Users/jc/w/tmp/Tune-2438-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book22/CTftF.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_24380.log 658612 Log file, useful mostly for debugging
Tune-2438-CTftF.abc 144 ABC music file with the extracted tune(s)
Tune-2438-CTftF.ps 6 PostScript
Tune-2438-CTftF.txt 144 Plain-text file with the extracted tune(s)
Tune-2438-get.log 8352 Log file, useful mostly for debugging
Tune-24380-get.log 3170 Log file, useful mostly for debugging
Tune-24383-get.log 4547 Log file, useful mostly for debugging
Tune-24385-get.log 3614 Log file, useful mostly for debugging
Tune-24387-get.log 3524 Log file, useful mostly for debugging
Tune-24389-get.log 4107 Log file, useful mostly for debugging
These files should be available for 24 hours.