unity ngui中出现问题Failed to call function OnClick of class...

unity ngui中出现问题Failed to call function OnClick of class...
场景中的某个物体如下：




代码内容如下：

在运行的时候点击该物体出现错误：
Failed to call function OnClick of class DogHeadSHake
Calling function OnClick with no parameters but the function requires 1.
UnityEngine.GameObject:SendMessage(String,Object,SendMessageOptions)
UICamera:Notify(GameObject,String,Object) (at Assets/NGUI/Scripts/UI/UICamera.cs:794)
UICamera:ProcessTouch(Boolean,Boolean) (at Assets/NGUI/Scripts/UI/UICamera.cs:1463)
UICamera:ProcessMouse() (at Assets/NGUI/Scripts/UI/UICamera.cs:1092)
UICamera:ProcessTouches() (at Assets/NGUI/Scripts/UI/UICamera.cs:1162)
UICamera:Update() (at Assets/NGUI/Scripts/UI/UICamera.cs:939)


请问这是怎么回事,该怎么解决?
物体中的碰撞体忘了勾IsTrigger,勾上以后同样还是有问题的.