Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/T/SkillernChalloner_PCD2.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Coll_52682.log 277305 Log file, useful mostly for debugging
Coll_52689.log 337352 Log file, useful mostly for debugging
Tune-5268-SkillernChalloner_PCD2.abc 156 ABC music file with the extracted tune(s)
Tune-5268-SkillernChalloner_PCD2.txt 156 Plain-text file with the extracted tune(s)
Tune-5268-get.log 3339 Log file, useful mostly for debugging
Tune-52680-get.log 1404 Log file, useful mostly for debugging
Tune-52681-get.log 4104 Log file, useful mostly for debugging
Tune-52685-get.log 1404 Log file, useful mostly for debugging
Tune-52686-get.log 3512 Log file, useful mostly for debugging
Tune-52688-get.log 3967 Log file, useful mostly for debugging
Tune-52689-Pioneer.abc 144 ABC music file with the extracted tune(s)
Tune-52689-Pioneer.ps 6 PostScript
Tune-52689-Pioneer.txt 144 Plain-text file with the extracted tune(s)
Tune-52689-get.log 4049 Log file, useful mostly for debugging
These files should be available for 24 hours.