In SharpDX.Toolkit.Graphics.TextureView, there are implicit operators for ShaderResourceView and RenderTargetView.

They are defined as:
public static implicit operator ShaderResourceView(TextureView view)
{
return view.View as ShaderResourceView;
}

But should be:
public static implicit operator ShaderResourceView(TextureView view)
{
return view == null ? null : view.View as ShaderResourceView;
}

Not doing so raises exceptions when an implicit conversion is done on a null resource (trying to convert a null TextureView into a function expecting a ShaderResourceView