TypeMock ruins my other tests!

Hi

In my solution I have a range of green unit tests (none of the are using TypeMock). When I add a new unit test using TypeMock (I am evaluating TypeMock at the moment) and run all test (Ctrl+R, A) most of my other unit test (that runs after my new unit test) fails!??

The new unit test I am adding is by no means finish yet - but I get the error by just having this one line in my test:

  <TestMethod> _
  <Isolated> _
  Public Sub SaveSiteToVP2009Test()

    ' Arrange
    ' -------
    Dim fakeDB = FakeInstance(Of DataAccessAdapter)()

  end sub

The errors I get in the following unit tests are releated to "DataAccessAdapter". It seems that this line throws a "Object reference not set to an instance of an object" exception:

        Dim _adapter As New DataAccessAdapter()

If I change my new unit test to this (comment/removing TypeMock stuff):

  <TestMethod> _
  <Isolated> _
  Public Sub SaveSiteToVP2009Test()

    ' Arrange
    ' -------
    ' Dim fakeDB = FakeInstance(Of DataAccessAdapter)() 

  end sub

My other unit test goes green (runs fine).


What am I doing wrong?!

And one other thing: If I finish my new unit test and run all the test (including my new TypeMocked unit test) one at the time everything is green (fine).