find ~/Library/Application Support/Developer/Shared/Xcode/Plug-ins -name Info.plist -maxdepth 3 | xargs -I{} defaults write {} DVTPlugInCompatibilityUUIDs -array-add `defaults read /Applications/Xcode.app/Contents/Info.plist DVTPlugInCompatibilityUUID`
在Xcode升级之后,将上面这行命令复制粘贴到终端执行下,然后重启Xcode,会出现一个提示框有俩选项,分别为load和skip开头,点击load开头的选项即可,此时已经失效的插件又可以重新使用啦!