I've been playing Pixel Dungeon on my Kindle Fire hd lately, and I decided to check if there were any updates for the game since my version was still in 0.4.2, and I saw that the latest version was 0.4.5. So I uninstalled the app, reinstalled it, but it didn't update. After that I used the dropbox link in the thread for news and information on the game, but it says something about an already existing signature and fails to install. Help?