Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/DftY/Straight.abc/1783"

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 ]
filesizedescription
Form_81480.log 900 Log file, useful mostly for debugging
Tune-81480-1783.abc 150 ABC music file with the extracted tune(s)
Tune-81480-1783.txt 150 Plain-text file with the extracted tune(s)
Tune-81480-get.log 3059 Log file, useful mostly for debugging
These files should be available for 24 hours.