Failed to find:metroEnableLowLatencyPresentationAPI

Hi I create a 2D game on unity 4.3.1f when i build the game for android 4.3 it build with success, but when i try to run it on emulator device nothing hapend When i click player settings 3 errors messages show up: -Failed to find:metroUnprocessedPlugins UnityEditor.PlayerSettingsEditor:OnEnable() -Failed to find:metroEnableIndependentInputSource UnityEditor.PlayerSettingsEditor:OnEnable() -Failed to find:metroEnableLowLatencyPresentationAPI UnityEditor.PlayerSettingsEditor:OnEnable() Any help Please im blocked?!! i try to make a simple 1 game with only image on scene, but still the same problem so please any help can be very very welcome thanks