Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/slide/BB50.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Coll_14549.log 363781 Log file, useful mostly for debugging
Find_14549.log 1470 Log file, useful mostly for debugging
Form_14540.log 898 Log file, useful mostly for debugging
Tune-1454-BB50.abc 142 ABC music file with the extracted tune(s)
Tune-1454-BB50.txt 142 Plain-text file with the extracted tune(s)
Tune-1454-get.log 3041 Log file, useful mostly for debugging
Tune-14541-get.log 5176 Log file, useful mostly for debugging
These files should be available for 24 hours.