NullReferenceExceptionUnityEngine.Component.get_gameObject ()UnityEngine.Component.GetComponentsInChildren[UIWidget] (Boolean includeInactive)NGUIMath.CalculateRelativeWidgetBounds (UnityEngine.Transform root, UnityEngine.Transform child, Boolean considerInactive) (at Assets/NGUI/Scripts/Internal/NGUIMath.cs:376)NGUIMath.CalculateRelativeWidgetBounds (UnityEngine.Transform root, UnityEngine.Transform child) (at Assets/NGUI/Scripts/Internal/NGUIMath.cs:367)UIScrollView.get_bounds () (at Assets/NGUI/Scripts/Interaction/UIScrollView.cs:161)UIScrollView.SetDragAmount (Single x, Single y, Boolean updateScrollbars) (at Assets/NGUI/Scripts/Interaction/UIScrollView.cs:463)UIScrollView.ResetPosition () (at Assets/NGUI/Scripts/Interaction/UIScrollView.cs:527)here is the call to ResetPosition