Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/cache/Gow-CSR2-abc1.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Coll_73378.log 266561 Log file, useful mostly for debugging
Tune-73378-Gow-CSR2-abc1.abc 355 ABC music file with the extracted tune(s)
Tune-73378-Gow-CSR2-abc1.txt 355 Plain-text file with the extracted tune(s)
Tune-73378-get.log 6570 Log file, useful mostly for debugging
These files should be available for 24 hours.