Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1803/Nelson.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Sess-54042.log 767981 Log file, useful mostly for debugging
Tune-5404-Nelson.abc 143 ABC music file with the extracted tune(s)
Tune-5404-Nelson.txt 143 Plain-text file with the extracted tune(s)
Tune-5404-get.log 3073 Log file, useful mostly for debugging
Tune-54041-get.log 4863 Log file, useful mostly for debugging
Tune-54049-book_of_rights.abc 151 ABC music file with the extracted tune(s)
Tune-54049-book_of_rights.ps 6 PostScript
Tune-54049-book_of_rights.txt 151 Plain-text file with the extracted tune(s)
Tune-54049-get.log 4200 Log file, useful mostly for debugging
These files should be available for 24 hours.