title: Error:Execution failed for task ':app:transformClassesWithInstantRunSlicerForDebug'. > java.io.IOException:
body: <p>whenever I try to run my app i get this error :</p>
  
  <p><strong>Error:Execution failed for task</strong></p>
  
  <pre><code> :app:transformClassesWithInstantRunSlicerForDebug'.
   java.io.IOException: Failed to delete 
  
   C:\Users\ashis\AndroidStudioProjects\FirstApp\app\build\intermediates\instant-run-support\debug\restart-changes.txt**
  </code></pre>
  
  <p><strong>and here is the output:</strong></p>
  
  <p>Information:Gradle tasks</p>
  
  <blockquote>
    <p>[:app:assembleDebug]
    :app:preBuild UP-TO-DATE
    :app:preDebugBuild UP-TO-DATE
    :app:checkDebugManifest
    :app:preReleaseBuild UP-TO-DATE
    :app:prepareComAndroidSupportAnimatedVectorDrawable2340Library UP-TO-DATE
    :app:prepareComAndroidSupportAppcompatV72340Library UP-TO-DATE
    :app:prepareComAndroidSupportSupportV42340Library UP-TO-DATE
    :app:prepareComAndroidSupportSupportVectorDrawable2340Library UP-TO-DATE
    :app:prepareDebugDependencies
    :app:compileDebugAidl UP-TO-DATE
    :app:compileDebugRenderscript UP-TO-DATE
    :app:generateDebugBuildConfig UP-TO-DATE
    :app:mergeDebugShaders UP-TO-DATE
    :app:compileDebugShaders UP-TO-DATE
    :app:generateDebugAssets UP-TO-DATE
    :app:mergeDebugAssets UP-TO-DATE
    :app:generateDebugResValues UP-TO-DATE
    :app:generateDebugResources UP-TO-DATE
    :app:mergeDebugResources UP-TO-DATE
    :app:processDebugManifest UP-TO-DATE
    :app:processDebugResources UP-TO-DATE
    :app:generateDebugSources UP-TO-DATE
    :app:incrementalDebugJavaCompilationSafeguard UP-TO-DATE
    :app:compileDebugJavaWithJavac UP-TO-DATE
    :app:compileDebugNdk UP-TO-DATE
    :app:compileDebugSources UP-TO-DATE
    :app:buildInfoDebugLoader
    :app:transformClassesWithExtractJarsForDebug UP-TO-DATE
    :app:transformClassesWithInstantRunVerifierForDebug UP-TO-DATE
    :app:transformClassesWithJavaResourcesVerifierForDebug UP-TO-DATE
    :app:mergeDebugJniLibFolders UP-TO-DATE
    :app:transformNative_libsWithMergeJniLibsForDebug UP-TO-DATE
    :app:processDebugJavaRes UP-TO-DATE
    :app:transformResourcesWithMergeJavaResForDebug UP-TO-DATE
    :app:transformResourcesAndNative_libsWithJavaResourcesVerifierForDebug UP-TO-DATE
    :app:transformClassesWithInstantRunForDebug UP-TO-DATE
    :app:transformClasses_enhancedWithInstant+reloadDexForDebug UP-TO-DATE
    :app:incrementalDebugTasks
    :app:prePackageMarkerForDebug
    :app:fastDeployDebugExtractor UP-TO-DATE
    :app:generateDebugInstantRunAppInfo UP-TO-DATE
    :app:coldswapKickerDebug
    :app:transformClassesWithInstantRunSlicerForDebug FAILED
    Error:Execution failed for task ':app:transformClassesWithInstantRunSlicerForDebug'.
    java.io.IOException: Failed to delete C:\Users\ashis\AndroidStudioProjects\FirstApp\app\build\intermediates\instant-run-support\debug\restart-changes.txt
    Information:BUILD FAILED
    Information:Total time: 1 mins 6.761 secs
    Information:1 error
    Information:0 warnings
    Information:See complete output in console</p>
  </blockquote>