Odata post always returns "HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed,"

Question

Using the latest EF6 and Microsoft.OData I made controllers using the "web API 2 OData Controller with actions, using Entity Framework"

The get works fine but the POST always returns "HTTP 404. The resource you are looking for (or one of its dependencies)"

It does not even get to the post section of the controller.

Does any one have a clue what can be wrong?

Thank you Much