Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Aird/Aird_vol4.abc/abc1"

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 ]
filesizedescription
Form_26002.log 1042 Log file, useful mostly for debugging
Tune-26002-abc1.abc 151 ABC music file with the extracted tune(s)
Tune-26002-abc1.txt 151 Plain-text file with the extracted tune(s)
Tune-26002-get.log 4756 Log file, useful mostly for debugging
These files should be available for 24 hours.