title: Libpng error at :app:mergeDebugResources - Gradle Error 42
body: <p>When compiling my app for debug in Android Studio, I get the following error(s):</p>
  
  <pre><code>Failed to run command:
  C:\Users\Farbod\Android-SDK\build-tools\21.1.2\aapt.exe s -i C:\Users\Farbod\AndroidStudioProjects\MyApp\app\src\main\res\drawable-hdpi\img_myImage.png -o C:\Users\Me\AndroidStudioProjects\MyApp\app\build\intermediates\res\debug\drawable-hdpi-v4\img_myImage.png
  Error Code:
  42
  Output:
  C:\Users\Me\AndroidStudioProjects\MyApp\app\src\main\res\drawable-hdpi\img_myImage.png: libpng warning: IDAT: Too many IDATs found
  libpng error: Read Error
  :app:mergeDebugResrouces FAILED
  </code></pre>
  
  <p>I've checked that all my files are in a <code>.png</code> format, and I'm not sure what could be wrong.</p>