title: "This model does not contain a SkinningData tag." exception
body: <p>I've been using tutorial from wikibooks, but I'm stuck at model rendering.
  ( <a href="http://en.wikibooks.org/wiki/Creating_a_Simple_3D_Game_with_XNA/Rendering_Your_Model" rel="nofollow">http://en.wikibooks.org/wiki/Creating_a_Simple_3D_Game_with_XNA/Rendering_Your_Model</a> )
  When I try to compile, I get this exception: "This model does not contain a SkinningData tag.".</p>
  
  <p>What I though about, is that model wasn't exported properly, but it doesn't work after using model from their site. </p>
  
  <p>I will be thankfull for any help.</p>