Same thing happened with me, I think that's the end itself.

that wasn't very cash money of the map but ok

I think it's just the map saying: "Alright, end of the map. Get out." And then it puts you back into the menu. Kinda funny in my opinion.

This is because you dont have map to continue your adventure :/

I think there is supposed to be a third map and because there is no third map, it just bring you back to the menu. But I think this is not the case.. because it happened on the first map too. I have both the first and second downloaded, but the first map 'failed' to load the 'next map'.