Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Graded2/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_8499.log 270812 Log file, useful mostly for debugging
Tune-8499-BB50.abc 144 ABC music file with the extracted tune(s)
Tune-8499-BB50.txt 144 Plain-text file with the extracted tune(s)
Tune-8499-get.log 3053 Log file, useful mostly for debugging
Tune-84991-get.log 10421 Log file, useful mostly for debugging
Tune-84993-get.log 5763 Log file, useful mostly for debugging
Tune-84994-get.log 27661 Log file, useful mostly for debugging
These files should be available for 24 hours.