Ok, I was developing my project and nothing appeared a mistake when I started again. However, I did nothing else, the game was functioning normally. It was very sudden. So I looked here in the forum for a solution, and found similar topics.However, they spoke of other plugins that were giving mismatch. In my case I'm in trouble just plug in more accurate and is more useful in my project, YEP_Item Core (Yes, the Core Item Yanfly). I'm desperate for solution because I am finishing my project and has this complication. Please if you can help me! Thank you very much in advance.