I downloaded this code sample and integrated it into my game http://xbox.create.msdn.com/en-US/education/catalog/sample/mesh_instancing

It works with the model that they supplied, but throws and exception whenever I use one of my models.

The current vertex declaration does not include all the elements required by the current vertex shader. TextureCoordinate0 is missing.

I tried pluging my model into their original source code and same thing. My model is an fbx from blender and has a texture. This is the function that throws the error

GraphicsDevice.DrawInstancedPrimitives(
  PrimitiveType.TriangleList,
  0, 0,
  meshPart.NumVertices,
  meshPart.StartIndex, 
  meshPart.PrimitiveCount, 
  instances.Length
);