Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/CDoT/proto.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Tune-57234-Hopsa1.abc 2400 ABC music file with the extracted tune(s)
Tune-57234-Hopsa1.pdf 49376 Portable Data Format
Tune-57234-Hopsa1.ps 50643 PostScript
Tune-57234-Hopsa1.txt 2400 Plain-text file with the extracted tune(s)
Tune-57234-get.log 12412 Log file, useful mostly for debugging
Tune-57234-proto.abc 142 ABC music file with the extracted tune(s)
Tune-57234-proto.txt 142 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.