Xamarin.Forms Android NavigationBar and TabbedPage Problem

Hello Community,

i have the following problems. I did these steps http://motzcod.es/post/115523285992/material-design-theming-for-xamarinforms-android for the Material Design Navigation bar. It shows the NavigationBar but not my slideout button. Second thing that isn't working is the TabbedPage.
On iOS everything working fine, NavigationBar, tabbedPage, CarouselPage.
I searched alot in the internet and here in the Forum but i just can't find anything that helpes me out.

It Looks like this http://postimg.org/image/4cfx22f8f/ .