Error - causing players to crash or skinner to fail

anything you can do? this is making some players crash, or skinner to just infinitely load and seems to be a common issue with a lot of skins.

ArgumentException: Could not create sprite (0, 0, 512, 512) from a 256x256 texture.
UnityEngine.Sprite.Create (UnityEngine.Texture2D texture, UnityEngine.Rect rect, UnityEngine.Vector2 pivot, System.Single pixelsPerUnit, System.UInt32 extrude, UnityEngine.SpriteMeshType meshType, UnityEngine.Vector4 border, System.Boolean generateFallbackPhysicsShape, UnityEngine.SecondarySpriteTexture[] secondaryTextures) (at <00000000000000000000000000000000>:0)
UnityEngine.Sprite.Create (UnityEngine.Texture2D texture, UnityEngine.Rect rect, UnityEn…