Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/abc/session/RoM/R-001.abc/set"

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 ]
filesizedescription
Tune-26825-get.log 53840 Log file, useful mostly for debugging
Tune-26825-set.abc 152 ABC music file with the extracted tune(s)
Tune-26825-set.txt 152 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.