In the last update, we deprecated the various addImageLayer (et al) methods in Map, replacing them with generic addLayer, removeLayer, etc. This time the correspond header includes are gone, meaning that you may need to include ImageLayer, ElevationLayer, etc. in your various source files.
This is all part of the move towards consolidating lots of functionality into Layers, providing the ability to make custom Layer types, and simplifying the creating of maps and layers from the API.
If you have any troubles, post your questions here. Thanks folks