title: StructureMap controller factory and null controller instance in MVC
body: <p>I'm still trying to figure things out with StructureMap and one of the issues i'm running into is my Controller Factory class blowing up when a null controller type is passed to it. This only happens when the application builds for the first time, after which every subsequent build works fine. Even when i shutdown Visual Studio and reopen the project (I'm not running this in IIS). It's almost like there is some sort of caching going on. This is what the controller class looks like:</p>
  
  <pre><code>public class IocControllerFactory : DefaultControllerFactory
  {
      protected override IController GetControllerInstance(Type controllerType)
      {
          try
          {
              return (Controller)ObjectFactory.GetInstance(controllerType);
          }
          catch (StructureMapException)
          {
              System.Diagnostics.Debug.WriteLine(ObjectFactory.WhatDoIHave());
              throw;
          }
      }
  }
  </code></pre>
  
  <p>What could be wrong? Do i need to have every controller registered? Thank you.</p>