title: how to fix ,Error:Execution failed for task ':app:mergeDebugResources'. > Error: java.lang.RuntimeException: Some file crunching failed
body: <p><a href="https://i.stack.imgur.com/lBPfM.png" rel="nofollow noreferrer"> here is screenshot</a> 
  I have tried using latest gradle version and 
  I also update latest android studio version to 2.2 , but following error occurring again and again while building the project, please suggest me.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>Executing tasks: [clean, :app:generateDebugSources, :app:generateDebugAndroidTestSources, :app:mockableAndroidJar, :app:prepareDebugUnitTestDependencies]
  
  Configuration on demand is an incubating feature.
  Incremental java compilation is an incubating feature.
  :clean UP-TO-DATE
  :app:clean
  :app:preBuild UP-TO-DATE
  :app:preDebugBuild UP-TO-DATE
  :app:checkDebugManifest
  :app:preReleaseBuild UP-TO-DATE
  :app:prepareComAndroidSupportAnimatedVectorDrawable2421Library
  :app:prepareComAndroidSupportAppcompatV72421Library
  :app:prepareComAndroidSupportSupportCompat2421Library
  :app:prepareComAndroidSupportSupportCoreUi2421Library
  :app:prepareComAndroidSupportSupportCoreUtils2421Library
  :app:prepareComAndroidSupportSupportFragment2421Library
  :app:prepareComAndroidSupportSupportMediaCompat2421Library
  :app:prepareComAndroidSupportSupportV42421Library
  :app:prepareComAndroidSupportSupportVectorDrawable2421Library
  :app:prepareDebugDependencies
  :app:compileDebugAidl
  :app:compileDebugRenderscript
  :app:generateDebugBuildConfig
  :app:generateDebugResValues
  :app:generateDebugResources
  :app:mergeDebugResources
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-xxhdpi-v4\abc_ic_menu_selectall_mtrl_alpha.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-xxhdpi-v4\abc_list_selector_disabled_holo_light.9.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-mdpi-v4\abc_menu_hardkey_panel_mtrl_mult.9.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-xxxhdpi-v4\abc_spinner_mtrl_am_alpha.9.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-xxxhdpi-v4\abc_ic_star_half_black_36dp.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-hdpi-v4\abc_ic_star_black_36dp.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-hdpi-v4\abc_ic_commit_search_api_mtrl_alpha.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-mdpi-v4\abc_text_select_handle_middle_mtrl_dark.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-xhdpi-v4\abc_text_select_handle_left_mtrl_light.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-ldrtl-hdpi-v17\abc_spinner_mtrl_am_alpha.9.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-xxhdpi-v4\abc_text_select_handle_left_mtrl_light.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-mdpi-v4\abc_list_pressed_holo_dark.9.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-xxhdpi-v4\abc_ic_star_half_black_36dp.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-xxhdpi-v4\abc_list_focused_holo.9.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-xxhdpi-v4\abc_btn_switch_to_on_mtrl_00001.9.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-xxxhdpi-v4\abc_ic_star_black_36dp.png ERROR: Unable to open PNG file
  AAPT err(Facade for 445014223): D:\projects\Intent2\app\build\intermediates\res\merged\debug\drawable-xhdpi-v4\abc_ic_menu_copy_mtrl_am_alpha.png ERROR: Unable to open PNG file
  
  Error: java.lang.RuntimeException: Some file crunching failed, see logs for details
  :app:mergeDebugResources FAILED
  
  FAILURE: Build failed with an exception.
  
  * What went wrong:
  Execution failed for task ':app:mergeDebugResources'.
  &gt; Error: java.lang.RuntimeException: Some file crunching failed, see logs for details
  
  * Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
  
  BUILD FAILED</code></pre>
  </div>
  </div>
  </p>