Cocoapods a problem solution after upgrading Mac OS X 10.10+xcode6.1

After upgrading Mac OS X 10.10+xcode 6.1, Cocoapods's dependent library management has also been upgraded accordingly. The latest release version is now 0.34. In previous releases, when you were updating and managing the library, you encountered the following error

/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>'

The solution is as follows, open terminals

1. Uninstalling Cocoapods

$ sudo gem uninstall cocoapods

2. Installing Xcodeproj

$ sudo gem install xcodeproj

3. Reinstall Cocoapods
$ sudo gem install Cocoapods

Pod Setup

4. Check the pod version

Pod--version

In the execution of the above command, if there is a red word or yellow word, indicating there is an error, need to check according to the actual situation.

You may encounter a problem when you execute pod setup and pod--version and get the following error message Verify_get_version

Options:

    --silent              Show nothing
    --completion-script   Print the auto-completion script
    --version             Show the version of the tool
    --verbose             Show more debugging information
    --no-ansi             Show output without ANSI codes
    --help                Show help banner of specified command
	from /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.34.4/lib/cocoapods/command.rb:129:in `verify_git_version!'
	from /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.34.4/lib/cocoapods/command.rb:48:in `run'
	from /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.34.4/bin/pod:33:in `<top (required)>'
	from /usr/bin/pod:23:in `load'
	from /usr/bin/pod:23:in `<main>'

Resolved as follows

Open xcode->preferences-> Select locaiton-> Select Xcode 6.1 in command line tools and prompt for the sudo password.

When you are done, go back to the terminal, enter Git--version, and confirm that the version 1.9 or above

Then reinstall the above cocoapods process.

Cocoapods a problem solution after upgrading Mac OS X 10.10+xcode6.1