BizMock - BizMockDirectory

Hi All,

I am trying to use BizMock. But when I use the BizMock with map configured in the Artifacts.xml file, the generated class file has a line as below

 public MapArtifact Summary = new MapArtifact(BizMockery.Instance.BizMockDirectory, new TryBizUnit.Maps.SummaryMap());
I am getting error in "__BizMockDirectory__". 

Exact error message:
"Error 1 'BizMock.BizMockery' does not contain a definition for 'BizMockDirectory' and no extension method 'BizMockDirectory' accepting a first argument of type 'BizMock.BizMockery' could be found (are you missing a using directive or an assembly reference?) C:\TryBizTalk\TryUnitTesting\TryBizMock.Tests\Artifacts.cs 125 74 TryBizMock.Tests
"
Am I missing any assembly in reference?

CodePlex Reference:http://bizmock.codeplex.com/discussions/434123#