Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/cache/Tune-20371-hornpipe.abc/tmp"

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 ]
filesizedescription
Coll_54472.log 458410 Log file, useful mostly for debugging
Coll_54475.log 760018 Log file, useful mostly for debugging
Coll_54476.log 466811 Log file, useful mostly for debugging
Find_54470.log 1881 Log file, useful mostly for debugging
Form_54473.log 870 Log file, useful mostly for debugging
Form_54474.log 829 Log file, useful mostly for debugging
Tune-5447-get.log 3103 Log file, useful mostly for debugging
Tune-5447-tmp.abc 161 ABC music file with the extracted tune(s)
Tune-5447-tmp.txt 161 Plain-text file with the extracted tune(s)
Tune-54470-get.log 4135 Log file, useful mostly for debugging
Tune-54474-get.log 8219 Log file, useful mostly for debugging
Tune-54475-get.log 3217 Log file, useful mostly for debugging
Tune-54476-get.log 11947 Log file, useful mostly for debugging
These files should be available for 24 hours.