So ive been trying to implement bone animation to my character but it just keeps acting weirdly. So my problem is when im done with creating all the bones and weights etc. the animation window makes my character act weird. I can control the bones in scene view nice and neat but when it comes to making animation, rotating one bone or moving the animation 1 seconds later just makes all of the bones rotate and move randomly. Also their Z rotation changes to a very very high value like 8000 or -9000. I also got an error message on console while i was trying to fix this issue. The error goes: Sprite "Character" contains bone weights which sum zero or are not normalized. To avoid visual artifacts please consider fixing them. UnityEngine.GUIUtility.ProcessEvent(Int32, IntPtr) I know this is a preview package but i really need to use it. Is there a way to fix it? Or can i use any other free alternatives to this package?