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When update crashes I got this message:

W:Failed to fetch http://cran.at.r-project.org/dists/precise-backports/main/source/Sources  404  Not Found
E:Some index files failed to download. They have been ignored, or old ones used instead.
Seth
  • 59,332

1 Answers1

1

I think your link is wrong, try this one

deb  http://cran.at.r-project.org/bin/linux/ubuntu precise/
Seth
  • 59,332