Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1784/SkillernChalloner_PCD1.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Tune-1750-SkillernChalloner_PCD1.abc 159 ABC music file with the extracted tune(s)
Tune-1750-SkillernChalloner_PCD1.txt 159 Plain-text file with the extracted tune(s)
Tune-1750-get.log 20896 Log file, useful mostly for debugging
Tune-17501-get.log 10678 Log file, useful mostly for debugging
Tune-17502-get.log 3542 Log file, useful mostly for debugging
Tune-17503-get.log 9418 Log file, useful mostly for debugging
Tune-17504-get.log 4593 Log file, useful mostly for debugging
Tune-17505-get.log 4150 Log file, useful mostly for debugging
Tune-17508-get.log 4385 Log file, useful mostly for debugging
Tune-17509-get.log 2886 Log file, useful mostly for debugging
These files should be available for 24 hours.