Hey guys. I have this game on my Kindle and my Sprint phone. Last night I went to the app on the Kindle to play and it said "There's a new upgrade for Dogfight. A new upgrade is required to play. Upgrades are free." It then has a button that says "okay" so I hit it. It then leads me to s a screen that says it cant find the url of the link. Not sure what that means, but I keep pressing "okay" and it leads me to that same screen. Just played the game on my phone and I think it might have upgraded itself. I absolutely love playing this and I'd hats to not be able to play because of this. Any help would be appreciated from Kindle users/experts.