Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book05/proto.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Sess-60514.log 11356 Log file, useful mostly for debugging
Tune-60514-get.log 3072 Log file, useful mostly for debugging
Tune-60514-proto.abc 144 ABC music file with the extracted tune(s)
Tune-60514-proto.txt 144 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.