Ruby - 宝石をインストールしようとするとエラーが発生する（未定義のメソッド 'from'）

Question

Help！私は、次のように私のgemfileにmongoid、その後、バンドルを実行する含まれている場合

> ERROR: While executing gem ... (NoMethodError) 
>  undefined method `from' for Gem::Package::TarHeader:Class 

：私は、次の取得「宝石がmongoidインストール」を実行している場合

：私はMongoidの宝石をインストールしようとしています：

source "http://rubygems.org" 
source "http://gems.rubyforge.org" 
source "http://gemcutter.org" 

gem "mongoid", "~> 2.0" 

私は何が起こっているのか分からない...

bundle 
Fetching source index for http://rubygems.org/ 
Fetching source index for http://gems.rubyforge.org/ 
Fetching source index for http://gemcutter.org/ 
/Users/lsayers/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/package/tar_reader.rb:58:in `block in each': undefined method `from' for Gem::Package::TarHeader:Class (NoMethodError) 
    from /Users/lsayers/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/package/tar_reader.rb:55:in `loop' 
    from /Users/lsayers/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/package/tar_reader.rb:55:in `each' 
    from /Users/lsayers/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/package/tar_input.rb:35:in `initialize' 
    from /Users/lsayers/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/package/tar_input.rb:20:in `new' 
    from /Users/lsayers/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/package/tar_input.rb:20:in `open' 
    from /Users/lsayers/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/package.rb:44:in `open' 
    from /Users/lsayers/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/format.rb:62:in `from_io' 
    from /Users/lsayers/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/format.rb:46:in `block in from_file_by_path' 
    from /Users/lsayers/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/open-uri.rb:35:in `open' 
    from /Users/lsayers/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/open-uri.rb:35:in `open' 
    from /Users/lsayers/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/format.rb:45:in `from_file_by_path' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/rubygems_integration.rb:100:in `spec_from_gem' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/source.rb:77:in `fetch' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/installer.rb:50:in `block in run' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/spec_set.rb:12:in `block in each' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/spec_set.rb:12:in `each' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/spec_set.rb:12:in `each' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/installer.rb:49:in `run' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/installer.rb:8:in `install' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/cli.rb:222:in `install' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/vendor/thor/task.rb:22:in `run' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/vendor/thor/invocation.rb:118:in `invoke_task' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/vendor/thor.rb:246:in `dispatch' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/vendor/thor/base.rb:389:in `start' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/bin/bundle:13:in `<top (required)>' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/bin/bundle:19:in `load' 
    from /Users/lsayers/.rvm/gems/ruby-1.9.2-p180/bin/bundle:19:in `<main>' 

を取得します？それは宝石との誤差のように見えますが、おそらくそれが私の機械なのか他の何かを考えていますか？

Answer 1

私が走った：

rvm rubygems latest 

、その後

rvm gem install mongoid 

をし、それが動作します:)バンドルは現在正常に動作しますが、ルビーの宝石のどのバージョンを使用している:)