What do you mean by 'MapLoadComplete' event?If you are talking about the Map.Progress event, this event may not be fired when the data (tiles and graphics) are already loaded locally.
Try using the Initialized and InitializationFailed event for every layer you add to the map.
Something like:
layer.Initialized += LayerInitializedHandler;
layer.InitializationFailed += LayerInitializationFailedHandler;
map.Layers.Add(layer);