Hello,
Just to add my own comments to this thread, I was having a similar issue, including not being able to resolve it by simply changing other NCrunch properties. However, in my case the problem was resolved by disabling all .NET Demon options then reloading the solution. Not sure if that was a complete fluke or not however, but .NET Demon has caused conflicts with other third party extensions in the past.
Regards;
Richard Moss