After upgrading 10.10 Yosemite, cocoapods encountered an error (solution)

RSMacBook-Pro:~ RS$ pod search jsonkit/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require‘: cannot load such file -- xcodeproj/prebuilt/universal.x86_64-darwin14-2.0.0/xcodeproj_ext (LoadError)    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require‘    from /Library/Ruby/Gems/2.0.0/gems/xcodeproj-0.17.0/lib/xcodeproj/ext.rb:6:in `rescue in <top (required)>‘    from /Library/Ruby/Gems/2.0.0/gems/xcodeproj-0.17.0/lib/xcodeproj/ext.rb:3:in `<top (required)>‘    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require‘    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require‘    from /Library/Ruby/Gems/2.0.0/gems/xcodeproj-0.17.0/lib/xcodeproj.rb:30:in `<top (required)>‘    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require‘    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require‘    from /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.33.1/lib/cocoapods.rb:2:in `<top (required)>‘    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require‘    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require‘    from /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.33.1/bin/pod:32:in `<top (required)>‘    from /usr/bin/pod:23:in `load‘    from /usr/bin/pod:23:in `<main>‘

I always wanted to try a new system. I was worried about bugs which could lead to a series of problems during development. I had been holding on to the problem. I had to upgrade the system two days ago and immediately encountered this problem.

Cocoapods cannot be operated. There is a solution on stackoverflow, Which is reprinted by many people. Unfortunately, didn't work for me. So I tried to reinstall Ruby and solved it.

Solution 1: (applicable to most people)

Open xcode 6 open xcode 6 -- system preference settings -- location -- change the command line tool to xcode 6.0

Uninstall cocoapods -- reinstall xcodeproj -- reinstall cocoapods

$ Sudo gem uninstall cocoapods

$ Sudo gem install xcodeproj

$ Sudo gem install cocoapods
If no problem exists, run pod -- version to check whether the installation is successful.

If, unfortunately, the above operations cannot be solved, it will be the same as the landlord

1. Update rbenv

$ Curl-l get. rvm. Io | bash-s stable

2. reinstall Ruby

$ Rvm install Ruby 2.1.1

3. reinstall cocoapods

$ Sudo gem install cocoapods

After upgrading 10.10 Yosemite, cocoapods encountered an error (solution)