title: Kotlin plugin error in android studio
body: <p>I'm trying to setup kotlin plugin for android studio and following <a href="https://kotlinlang.org/docs/reference/using-gradle.html" rel="nofollow">this guide</a>. Everything compiles fine and I can use <code>.kt</code> files in my project. However, in every kotlin files android-studio says the following:</p>
  
  <blockquote>
    <p>Kotlin library 'compiler-1.0-rc1.jar' has an unsupported format. Please update library or plugin</p>
  </blockquote>
  
  <p>How can I remove this warning/error?</p>
  
  <p>Here is my top-level <code>build.gradle</code>:</p>
  
  <pre><code>buildscript {
      repositories {
          mavenCentral()
          jcenter()
      }
      dependencies {
          classpath 'com.android.tools.build:gradle:1.3.0'
          classpath 'me.tatarka:gradle-retrolambda:3.2.3'
          classpath "com.android.databinding:dataBinder:1.0-rc1"
          classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:0.14.449'
      }
  }
  
  allprojects {
      repositories {
          mavenCentral()
          jcenter()
      }
  }
  </code></pre>
  
  <p>Here is my <code>build.gradle</code> in <code>app</code> dir:</p>
  
  <pre><code>apply plugin: 'com.android.application'
  apply plugin: 'kotlin-android'
  
  android {
  
      //Ommited for brevity
  
      sourceSets {
          main.java.srcDirs += 'src/main/kotlin'
      }
  }
  
  dependencies {
      compile 'org.jetbrains.kotlin:kotlin-stdlib:0.14.449'
  }
  </code></pre>
  
  <p>I'm using Android studio 1.4,<br>
  buildToolsVersion 23.0.1,<br>
  Android studio kotlin plugin version 0.14.449.Idea141.12</p>