Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Ruby/Collections.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Form_31588.log 878 Log file, useful mostly for debugging
Tune-3158-Collections.abc 148 ABC music file with the extracted tune(s)
Tune-3158-Collections.txt 148 Plain-text file with the extracted tune(s)
Tune-3158-get.log 3163 Log file, useful mostly for debugging
Tune-31584-get.log 8239 Log file, useful mostly for debugging
Tune-31585-get.log 1386 Log file, useful mostly for debugging
Tune-31589-get.log 4302 Log file, useful mostly for debugging
These files should be available for 24 hours.