Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/GM/000_Title.abc/1750"

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 ]
filesizedescription
Coll_98305.log 1170829 Log file, useful mostly for debugging
Tune-98305-1750.abc 149 ABC music file with the extracted tune(s)
Tune-98305-1750.txt 149 Plain-text file with the extracted tune(s)
Tune-98305-get.log 6415 Log file, useful mostly for debugging
These files should be available for 24 hours.