In Ubuntu 15.04, I'm getting this after doing sudo apt-get update:
W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/vivid/main/binary-amd64/Packages 404 Not Found W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/vivid/main/binary-i386/Packages 404 Not Found E: Some index files failed to download. They have been ignored, or old ones used instead.
Go to this link: http://extras.ubuntu.com/ubuntu/dists/
As it says, vivid is not there. Did they move it? Will they move it back? How do I repair?