Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book32/CTftF.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3963-CTftF.ps) >>/Users/jc/w/tmp/Tune-3963-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book32/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
Tune-3963-CTftF.abc 144 ABC music file with the extracted tune(s)
Tune-3963-CTftF.ps 6 PostScript
Tune-3963-CTftF.txt 144 Plain-text file with the extracted tune(s)
Tune-3963-get.log 13534 Log file, useful mostly for debugging
Tune-39630-get.log 4278 Log file, useful mostly for debugging
Tune-39631-get.log 5237 Log file, useful mostly for debugging
Tune-39634-get.log 2967 Log file, useful mostly for debugging
Tune-39635-get.log 5191 Log file, useful mostly for debugging
Tune-39636-get.log 4841 Log file, useful mostly for debugging
Tune-39638-get.log 7846 Log file, useful mostly for debugging
Tune-39639-get.log 6749 Log file, useful mostly for debugging
These files should be available for 24 hours.