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As of today I cannot install any gems. AFAIK nothing has changed.

On install I get the following:

$ ~/ gem install sinatra WARNING: Error fetching data: hostname does not match the server certificate (https://gemcutter.org/latest_specs.4.8.gz) WARNING: Error fetching data: hostname does not match the server certificate (https://gemcutter.org/latest_specs.4.8.gz) ERROR: Could not find a valid gem 'sinatra' (>= 0) in any repository ERROR: Possible alternatives: sinatra

Any ideas? (This is on a Mac)

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  • Can you supply more info? You're obviously in a linux/unix system, but which distro/system, which ruby version you use (rvm, rbenv, system-ruby). Do you use custom DNS (i.e. openDNS/GoogleDNS or ISP dns?). Answer those first... I just installed mechanize on a local system so the gem server works fine. Commented Feb 3, 2013 at 22:46
  • Added that I'm on a Mac. Nothing is any different that the working state that it was last week, that I know of. Commented Feb 3, 2013 at 22:54
  • I'm having the same issue, I think it could be something with the RubyGems issue that's been going on as of lately. Commented Feb 3, 2013 at 23:21
  • 2
    The way i fixed this is opening up .gemrc and under sources removing the line - gemcutter.org Commented Feb 3, 2013 at 23:24
  • Yes, removing gemcutter from the sources fixed this. Thanks Commented Feb 3, 2013 at 23:26

1 Answer 1

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I'm not entirely sure as to why but by editing my ~/.gemrc and removing all sources bar rubygems.org, the problem went away.

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I had the same problem, and this solution worked to me as well!

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