Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Kerr_MM/BB50.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Tune-6031-BB50.abc 144 ABC music file with the extracted tune(s)
Tune-6031-BB50.txt 144 Plain-text file with the extracted tune(s)
Tune-6031-get.log 3053 Log file, useful mostly for debugging
Tune-60310-EliasHowe_MusiciansCompanionP2-1843-V1.abc 175 ABC music file with the extracted tune(s)
Tune-60310-EliasHowe_MusiciansCompanionP2-1843-V1.txt 175 Plain-text file with the extracted tune(s)
Tune-60310-get.log 3688 Log file, useful mostly for debugging
These files should be available for 24 hours.