title: Error:Execution failed for task ':app:mergeDebugResources'. > Some file crunching failed, see logs for details build gradle issues
body: <p>currently I am using Android Studio 2.1 when I run my App it shows me some error in Message Gradle Build saying the following</p>
  
  <pre><code> Information:Gradle tasks [:app:clean, :app:generateDebugSources, :app:prepareDebugUnitTestDependencies, :app:mockableAndroidJar, :app:generateDebugAndroidTestSources, :app:assembleDebug]
  :app:clean
  :app:preBuild UP-TO-DATE
  :app:preDebugBuild UP-TO-DATE
  :app:checkDebugManifest
  :app:preReleaseBuild UP-TO-DATE
  :app:prepareComAndroidSupportAppcompatV72221Library
  :app:prepareComAndroidSupportDesign2221Library
  :app:prepareComAndroidSupportSupportV42221Library
  :app:prepareDebugDependencies
  :app:compileDebugAidl
  :app:compileDebugRenderscript
  :app:generateDebugBuildConfig
  :app:mergeDebugShaders
  :app:compileDebugShaders
  :app:generateDebugAssets
  :app:mergeDebugAssets
  :app:generateDebugResValues UP-TO-DATE
  :app:generateDebugResources
  :app:mergeDebugResources
  AAPT err(Facade for 114461397): libpng error: Read Error
  *Error:Execution failed for task ':app:mergeDebugResources'.
  &gt; Some file crunching failed, see logs for details*
  Information:BUILD FAILED
  Information:Total time: 24.87 secs
  Information:1 error
  Information:0 warnings
  Information:See complete output in console
  </code></pre>
  
  <p>I tried cleaning and rebuilding it but it didn't work. The answer for <a href="https://stackoverflow.com/questions/30764604/execution-failed-for-task-appmergedebugresources-crunching-cruncher-png-fa">this</a> question didn't work also. Any help would be appreciated, thanks.</p>
  
  <p><strong>Updated:</strong>
  Here is the log output</p>
  
  <pre><code>* Exception is:
  org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:mergeDebugResources'.
          at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.
  java:69)
          at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46
  )
          at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskEx
  ecuter.java:35)
          at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)
          at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
          at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExec
  uter.java:52)
          at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.j
  ava:52)
          at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
          at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.j
  ava:43)
          at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecute
  r.java:203)
          at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecute
  r.java:185)
          at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecut
  or.java:66)
          at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:
  50)
          at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:25)
          at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:110)
          at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)
          at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
          at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:23)
          at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:43)
          at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
          at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
          at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:30)
          at org.gradle.initialization.DefaultGradleLauncher$4.run(DefaultGradleLauncher.java:154)
          at org.gradle.internal.Factories$1.create(Factories.java:22)
          at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
          at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:52)
          at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:151)
          at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:32)
          at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:99)
          at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:93)
          at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
          at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:62)
          at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:93)
          at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:82)
          at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter
  .java:94)
          at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)
          at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
          at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:43)
          at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:28)
          at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:78)
          at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:48)
          at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExe
  cuter.java:51)
          at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExe
  cuter.java:28)
          at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:43)
          at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:170)
          at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:23
  7)
          at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:21
  0)
          at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:35)
          at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)
          at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:206)
          at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:169)
          at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
          at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
          at org.gradle.launcher.Main.doAction(Main.java:33)
          at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
          at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:54)
          at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:35)
          at org.gradle.launcher.GradleMain.main(GradleMain.java:23)
  Caused by: java.lang.RuntimeException: Some file crunching failed, see logs for details
          at com.android.builder.png.QueuedCruncher.waitForAll(QueuedCruncher.java:260)
          at com.android.builder.png.QueuedCruncher.end(QueuedCruncher.java:280)
          at com.android.ide.common.res2.MergedResourceWriter.end(MergedResourceWriter.java:132)
          at com.android.ide.common.res2.DataMerger.mergeData(DataMerger.java:295)
          at com.android.ide.common.res2.ResourceMerger.mergeData(ResourceMerger.java:405)
          at com.android.build.gradle.tasks.MergeResources.doFullTaskAction(MergeResources.java:178)
          at com.android.build.gradle.internal.tasks.IncrementalTask.taskAction(IncrementalTask.java:88)
          at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)
          at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.doExecute(A
  nnotationProcessingTaskFactory.java:244)
          at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(Annota
  tionProcessingTaskFactory.java:220)
          at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.execute(Ann
  otationProcessingTaskFactory.java:231)
          at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(Annota
  tionProcessingTaskFactory.java:209)
          at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.j
  ava:80)
          at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.
  java:61)
          ... 57 more
  </code></pre>