title: Xcode 6 Toolchain Build Error
body: <p>I'm trying to make a Today Extension, so I opened up a new Xcode 6 project, and created a Today Extension. I then Built and Ran the project but it failed with this error:</p>
  
  <pre><code>Command /Applications/Xcode6-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-stdlib-tool failed with exit code 1
  </code></pre>
  
  <p>I literally didn't change anything, and I've only use Xcode for playground before now. How do I fix this??</p>