Sorry for the long delay responding, I was travelling yesterday. I have just released a new version of MeshBakerLOD to the asset store that uses the MB3_ components instead of the MB2_ components. It should be live in a day or two. There should be a legacy folder in the Mesh Baker package that includes the MB2_ versions of the scripts. I have also uploaded a new version of MeshBaker to ensure that this is the case.