title: Error:Execution failed for task ':android:transformClassesAndResourcesWithProguardForRelease'
body: <p>Every time I am getting this error when running my project. I can do a Clean and then Run again, and it works. But it is not an optimal solution. Any ideas?</p>
  
  <pre><code>Error:Execution failed for task ':android:transformClassesAndResourcesWithProguardForRelease'.
  </code></pre>
  
  <blockquote>
    <p>java.io.IOException: Failed to rename android\build\intermediates\transforms\proguard\release\folders\3\1f\main\classes.jar to android\build\intermediates\transforms\proguard\release\jars\3\1f\classes.jar</p>
  </blockquote>