Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/cache/Tune-21820-air.abc/tmp"

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 ]
filesizedescription
Form_63085.log 1149 Log file, useful mostly for debugging
Tune-63085-get.log 3079 Log file, useful mostly for debugging
Tune-63085-tmp.abc 156 ABC music file with the extracted tune(s)
Tune-63085-tmp.txt 156 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.