title: Silverlight RIA AuthenticationService GetUser doesnt work through JSon
body: <p>I've been trying to test out different RIA service calls through the Json endpoint seem to have come up with an odd case.  Using the default Business Application template, I can make calls to Login/Logout and various other custom methods I've put in, but for some reason GetUser wont work.  It always returns HTTP 405, Method Not allowed</p>
  
  <p>Does anyone have an idea why this is?</p>
  
  <p>Using fiddler I cant see any difference between calling the JSon and the Binary endpoint yet they produce different results.</p>