Id rather quote than start a new thread, hopefully someone can help my hopefully easy fix.
I copied the example from ESRI on using the Bing maps service, and am getting the error "A value of type 'TileLayer' cannot be added to a collection or dictionary of type 'LayerCollection'.
I am able to get Bing Maps to appear correctly on a browser using the code copied & pasted from the Bing SDK site.