Euns-Mac-mini:dotor-ios eunleem$ pod install [!] Unable to load a specification for the plugin `/Library/Ruby/Gems/2.0.0/gems/cocoapods-deintegrate-1.0.0` Updating local specs repositories CocoaPods 1.0.0 is available. To update use: `gem install cocoapods` Until we reach version 1.0 the features of CocoaPods can and will change. We strongly recommend that you use the latest version at all times. For more information see http://blog.cocoapods.org and the CHANGELOG for this version http://git.io/BaH8pQ. Analyzing dependencies Pre-downloading: `MGSplitViewController` from `https://github.com/zipleen/MGSplitViewController.git` Downloading dependencies Installing MGSplitViewController (1.0.0) Generating Pods project Integrating client project [!] Please close any current Xcode sessions and use `dotor.xcworkspace` for this project from now on. Sending stats Sending stats Pod installation complete! There is 1 dependency from the Podfile and 1 total pod installed. Euns-Mac-mini:dotor-ios eunleem$ sudo gem install cocoapods Password: Fetching: cocoapods-1.0.0.gem (100%) Successfully installed cocoapods-1.0.0 Parsing documentation for cocoapods-1.0.0 Installing ri documentation for cocoapods-1.0.0 1 gem installed Euns-Mac-mini:dotor-ios eunleem$ pod install Re-creating CocoaPods due to major version update. Analyzing dependencies Pre-downloading: `MGSplitViewController` from `https://github.com/zipleen/MGSplitViewController.git`, commit `d7682eb68a59da604759aea9ac9f3547b87ca2af` [!] The `MGSplitViewController` pod failed to validate due to 1 error: - ERROR | license: Invalid file type - WARN | source: Git sources should specify a tag. Euns-Mac-mini:dotor-ios eunleem$