Protected Fields Mock/Fake

Hello All,

Newby to TypeMock Isolator. I'm working on a legacy app at our institution, fixing bugs and what not... :x
App is on MVC.NET, trying to poke as little as possible with the app, and having some issues trying to do some unit tests.

I'm basically trying to fake/Mock a Protected field, I found this on the typemock user guide/online documentation:
[url]http://docs.typemock.com/isolator/Default.aspx##Ref.chm/Documentation/Fields.html[/url]

Tried following it but I am getting the following error message on the current production code I have.
System.IndexOutOfRangeException : Index was outside the bounds of the array.



For the sake of making things easy to replicate the error, I have reduced the code to the following:

        [Test]
        public void TestingSomething()
        {
            //Arrange
            var mockBase = MockManager.Mock<MyBaseControllerClass>();
            var mockedBaseField = mockBase.MockField("dataAccess");
            mockedBaseField.ExpectAndReturn("getMeSomeData", new object());

            var derivedController = new MyDerivedControllerClass();  //<------- This is where the unit test BLOWS UP !!
        }

    public class MyClassWithDataAccessFunctions
    {
        public object getMeSomeData()  { return null; }
    }
    public class MyBaseControllerClass
    {
        protected MyClassWithDataAccessFunctions dataAccess =
            new MyClassWithDataAccessFunctions();
    }
    public class MyDerivedControllerClass : MyBaseControllerClass
    {
        public void FunctionUsingDataAccess()
        {
            var data = dataAccess.getMeSomeData();
        }
    }

So any help would be appreciated, probably I'm doing things incorrectly or in a funky fashion

THANKS !!!
edo@rdo