android - Error:Execution failed for task ':app:transformClassesWithInstantRunSlicerForDebug'. > java.io.IOException:

Question

whenever I try to run my app i get this error :

Error:Execution failed for task

 :app:transformClassesWithInstantRunSlicerForDebug'.
 java.io.IOException: Failed to delete 

 C:UsersashisAndroidStudioProjectsFirstAppappuildintermediatesinstant-run-supportdebug
estart-changes.txt**

and here is the output:

Information:Gradle tasks

[: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:UsersashisAndroidStudioProjectsFirstAppappuildintermediatesinstant-run-supportdebug estart-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

Answer 1

:app:transformClassesWithInstantRunSlicerForDebug'. java.io.IOException: Failed to delete

-- try to clean project and rebuild project.

From @Kael: A clean is performed via Build -> Clean Project or Build -> Rebuild Project.