title: Build failing since last update
body: <p>I cannot build my Android project since I updated Android studio about ten days ago. I updated it again yesterday, but I still cannot build project. Worst thing is I cannot determine the source of this problem (I'm Android noob really).</p>
  
  <p>In build report window, it says:</p>
  
  <p><strong>Run build</strong> > Run tasks > :app:processDebugResources > Execute TaskAction:</p>
  
  <blockquote>
    <p>org.gradle.tooling.BuildException: Failed to process resources, see
    aapt output above for details.    at
    com.android.build.gradle.internal.res.LinkApplicationAndroidResourcesTask.invokeAaptForSplit(LinkApplicationAndroidResourcesTask.java:512)
      at
    com.android.build.gradle.internal.res.LinkApplicationAndroidResourcesTask.doFullTaskAction(LinkApplicationAndroidResourcesTask.java:249)
      at
    com.android.build.gradle.internal.tasks.IncrementalTask.taskAction(IncrementalTask.java:106)
      at sun.reflect.GeneratedMethodAccessor179.invoke(Unknown Source)    at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:498)     at
    org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)     at
    org.gradle.api.internal.project.taskfactory.IncrementalTaskAction.doExecute(IncrementalTaskAction.java:46)
      at
    org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:39)
      at
    org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:26)
      at
    org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:121)
      at
    org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
      at
    org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
      at
    org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
      at
    org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
      at
    org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:110)
      at
    org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:92)
      at
    org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70)
      at
    org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
      at
    org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:62)
      at
    org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
      at
    org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:60)
      at
    org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:97)
      at
    org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:87)
      at
    org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52)
      at
    org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
      at
    org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
      at
    org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
      at
    org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
      at
    org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:248)
      at
    org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
      at
    org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
      at
    org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
      at
    org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
      at
    org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:241)
      at
    org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230)
      at
    org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:123)
      at
    org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:79)
      at
    org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:104)
      at
    org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:98)
      at
    org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:626)
      at
    org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:581)
      at
    org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:98)
      at
    org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
      at
    org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
      at
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      at
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      at
    org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
      at java.lang.Thread.run(Thread.java:745)    Suppressed:
    java.lang.RuntimeException: Some file processing failed, see logs for
    details       at
    com.android.builder.internal.aapt.QueuedResourceProcessor.waitForAll(QueuedResourceProcessor.java:121)
          at
    com.android.builder.internal.aapt.QueuedResourceProcessor.end(QueuedResourceProcessor.java:141)
          at
    com.android.builder.internal.aapt.v2.QueueableAapt2.close(QueueableAapt2.java:104)
          at
    com.android.build.gradle.internal.res.LinkApplicationAndroidResourcesTask.doFullTaskAction(LinkApplicationAndroidResourcesTask.java:293)
          ... 47 more Caused by:
    com.android.ide.common.process.ProcessException: Failed to execute
    aapt  at
    com.android.builder.core.AndroidBuilder.processResources(AndroidBuilder.java:809)
      at
    com.android.builder.core.AndroidBuilder.processResources(AndroidBuilder.java:797)
      at
    com.android.build.gradle.internal.res.LinkApplicationAndroidResourcesTask.invokeAaptForSplit(LinkApplicationAndroidResourcesTask.java:491)
      ... 48 more Caused by: java.util.concurrent.ExecutionException:
    java.util.concurrent.ExecutionException:
    com.android.builder.internal.aapt.v2.Aapt2Exception: AAPT2 error:
    check logs for details    at
    com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:503)
      at
    com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:482)
      at
    com.google.common.util.concurrent.AbstractFuture$TrustedFuture.get(AbstractFuture.java:79)
      at
    com.android.builder.internal.aapt.AbstractAapt.link(AbstractAapt.java:34)
      at
    com.android.builder.core.AndroidBuilder.processResources(AndroidBuilder.java:807)
      ... 50 more Caused by: java.util.concurrent.ExecutionException:
    com.android.builder.internal.aapt.v2.Aapt2Exception: AAPT2 error:
    check logs for details    at
    com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:503)
      at
    com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:462)
      at
    com.google.common.util.concurrent.AbstractFuture$TrustedFuture.get(AbstractFuture.java:79)
      at
    com.android.builder.internal.aapt.v2.QueueableAapt2.lambda$makeValidatedPackage$1(QueueableAapt2.java:166)
      at
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      at
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      ... 1 more Caused by:
    com.android.builder.internal.aapt.v2.Aapt2Exception: AAPT2 error:
    check logs for details    at
    com.android.builder.png.AaptProcess$NotifierProcessOutput.handleOutput(AaptProcess.java:443)
      at
    com.android.builder.png.AaptProcess$NotifierProcessOutput.err(AaptProcess.java:395)
      at
    com.android.builder.png.AaptProcess$ProcessOutputFacade.err(AaptProcess.java:312)
      at
    com.android.utils.GrabProcessOutput$1.run(GrabProcessOutput.java:104)</p>
  </blockquote>
  
  <p><strong>Java compiler:</strong> > failed linking references</p>
  
  <p><strong>Android issues:</strong> > ../../.gradle/caches/transforms-1/files-1.1/actionbarsherlock-4.4.0.aar/278d29925e50f728f41382ea6efbdca1/res/values/values.xml > error: resource android:attr/popupPromptView is private.</p>
  
  <p>This project uses actionbarsherlock ever since I started it 2 years ago and this is my project's fifth version increment, I never had such issues.</p>
  
  <p>I've invalidated cache and cleaned project countless times. I deleted folders: .gradle, gradle, grdl, grdl.gradle, .idea, build, and deleted .iml file.</p>
  
  <p>I tried with higher minSdkVersion and compileSdkVersion, nothing helped.</p>
  
  <p>What else should I post here in order to reveal the cause of inability to build?</p>