title: Unable to start React Native for Android
body: <p>I'm trying to get started with Android with React Native and I'm trying to the get the starter project (AwesomeProject) working. I keep getting the following error:</p>
  
  <pre><code>➜  AwesomeProject  react-native run-android
  Starting JS server...
  Building and installing the app on the device (cd android &amp;&amp; ./gradlew installDebug)...
  Exception in thread "main" java.io.FileNotFoundException: /Users/myusername/.gradle/wrapper/dists/gradle-2.4-all/6r4uqcc6ovnq6ac6s0txzcpc0/gradle-2.4-all.zip.lck (No such file or directory)
      at java.io.RandomAccessFile.open0(Native Method)
      at java.io.RandomAccessFile.open(RandomAccessFile.java:316)
      at java.io.RandomAccessFile.&lt;init&gt;(RandomAccessFile.java:243)
      at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:49)
      at org.gradle.wrapper.Install.createDist(Install.java:46)
      at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:126)
      at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
  Could not install the app on the device, read the error above for details.
  Make sure you have an Android emulator running or a device connected and have
  set up your Android development environment:
  https://facebook.github.io/react-native/docs/android-setup.html
  </code></pre>