. lang。NoClassDefFoundError:android.support.v7.app。AppCompatDelegateImplV14 Xamarin的安卓

Suddenly started receiving this error since a support library update, which crashes the application on launch, even if everything builds fine. I tried to use lower version packages, which gave me the same error. I tried complete reinstall of Xamarin and Android SDK and finally creating a new Project which uses AppCompat but no success.Suddenly started receiving this error since a s