No, no mods at all. That is why I am surprised I have been seeing this message for a month now after at least 10 times trying to delete the game and delete through RegEdit. I deleted all my stuff from the last game and now even with everything deleted from the old inventory I started a new game and had a great seed and when I got the antler, I got the same message... I have not been in a situation where Google can't find the same error message. I can't imagine I am the only one