Mecanim errors after animation clip import

Hello, I've imported an fbx animation clip and while previewing it in inspector I received a following errors: 1) Quaternion To Matrix conversion failed because input Quaternion is invalid {-1.#IND00, -1.#IND00, -1.#IND00, -1.#IND00} l=-1.#IND00 2) aabb.IsValid() 3) !IsFinite(outDistanceForSort). What could lead to this errors? Thanks in advance.