Cant Get it to work... GooglePlay Services

so bashing my head with this issue around 2 days now
tried most of the solutions found online doesnt seem to help
so the problem is Google Play Services
im using the latest package 0.9.5 with admobs package as well
im able to sign in to the Play service interface and get in to the leaderboard just to see its empty
the second i post a score i cant get to the leaderboard any more its just crashes (only googleplay interface no the app)


when i try to see the leaderboard it says
java.lang.ClassNotFoundException: android.support.v7.app.AppCompatViewInflater
in the ADB

also did already tried to put this

<activity android:name="com.google.games.bridge.NativeBridgeActivity"
android:theme="@android:style/Theme.Translucent.NoTitleBar.Fullscreen" />
at the manifest (just saying as its the most popular solution)


the code is from their official doco

void Start () {
PlayGamesClientConfiguration config = new PlayGamesClientConfiguration.Builder().Build();
PlayGamesPlatform.InitializeInstance(config);
PlayGamesPlatform.Activate();
SignIn();
}
void SignIn()
{
Social.localUser.Authenticate(success => { });
}
public void PostScore(long score)
{
Social.ReportScore(score, leaderboardId,success => { });
}
public void ShowLeaderboard()
{
if(!Social.localUser.authenticated)
{
SignIn();
}
Social.ShowLeaderboardUI();
}