assassin's creed 4 endless sycning

Is anyone else started having probelms playing assassin's creed 4 on xbox one. mine was working just fine untill today where its just at the very first main menu where it tells you to press "A". I press the A button and it says its sycning and it will be
done soon but it never does and i'm unable to play the game now.

:)

 

Worth buying?

Just brought the Assassin's Creed Anthology, so definitely buying Assassin's Creed 4 Black Flag

 

So Which Of The "Assassin's Creed" Game Do I Need To Have Played Before Playing "III"?

So "Assassin's Creed III" will be coming out soon but there are apparently already 4 games.



"Assassin's Creed" is a game I played and really enjoyed.



"Assassin's Creed II" was good fun but eventually got buried beneath a pile of other releases.



Then there's "Assassin's Creed: Brotherhood" and "Assassin's Creed: Revelations".



So why are they now releasing "Assassin's Creed III" and not "Assassin's Creed V"?



Are the last 2 games really "Assassin's Creed" games or were they just sort of churned out to make money on a franchise while they worked on "Assassin's Creed III"?



Thanks in advance.



Az