Geofence warning when uploading Fence

Copter 4.0.3

Uploading Geofence (Polygon & Altitude) through mavlink protocol by first setting FENCE_TOTAL param then sending FENCE_POINT messages, iterating until complete. While uploading I recieve an “Invalid Polygon Vertex Count” warning but the Geofence reports healthy and when I plug it into Mission Planner, I can download the fence and see that it uploaded successfully?? Any reason why I would recieve this warning??