Cannot use WhenCalled without a complementing behavior state

Hi,

I'm trying to migrate some old tests so that they don't make use of external dependencies. I was making good progress until I ran into a situation where a test throws the exception
TypeMock.TypeMockException:
*** Cannot use WhenCalled without a complementing behavior statement

There are a couple of odd things about this, including the stack trace:

at TypeMock.MockManager.a(String A_0, String A_1, Object A_2, Object A_3, Boolean A_4, Boolean A_5, Object[] A_6)
at TypeMock.InternalMockManager.getReturn(Object that, String typeName, String methodName, Object methodParameters, Boolean isInjected, Boolean isInterceptedType)
at Symantec.ProvisioningApi.Implementation.UnitTest.ProvisionOrganisationHandlerTest.ProvisionOrganisationWithRoamingTest() in C:piApplicationsusplat_Prov_API_DLPProvisioningApiImplementation.UnitTestProvisionOrganisationHandlerTest.cs:line 0

The exception is thrown when I reach the end of the test, not when a call to WhenCalled is made. The InnerException is null.

To try and figure this out, I've been moving back up the test, commenting out lines of code until I isolated it to the following line (commenting it out makes the exception go away, but it isn't thrown at this line):

Isolate.WhenCalled(() => fakeProvisioningCustomerApi.ProvisionWebUrlFilteringService(null));

I can actually step through all the lines that have been commented out, but the exception seems to be thrown when the method exits, so the mocking is working, but... I realise the following code won't make much sense to others, but I include it below. What could I be doing wrong?

Merry Christmas, :)

Tali

    [TestMethod()]
    [DeploymentItem("Symantec.ProvisioningApi.Implementation.dll")]
    [DeploymentItem(@"ProvisioningApiServiceHostXmlDocumentsAxaptaId.xml", "XmlDocuments")]
    [Isolated]
    public void ProvisionOrganisationWithRoamingTest()
    {
      const int testNewCustomerId = 867867868;
      const string testNewFinanceId = "XXX1234";
      const int testCustomerTemplateId = 278678;
      //const int testRoamingLicenceCount = 2;
      const int testPartnerCustomerId = 1411;

      Isolate.WhenCalled(() => UserDetailsExtension.Current).ReturnRecursiveFake();
      Isolate.WhenCalled(() => UserDetailsExtension.Current.IsInRole(default(CustomerApi.RoleType), default(CustomerApi.ServiceTypes))).WillReturn(true);


      CustomerApiMethods fakeCustomerApi = Isolate.Fake.Instance<CustomerApiMethods>(Members.ReturnRecursiveFakes);
      ProvisioningCustomerApiMethods fakeProvisioningCustomerApi = Isolate.Fake.Instance<ProvisioningCustomerApiMethods>(Members.ReturnRecursiveFakes);
      CrmExecuter fakeCrmExecutor = Isolate.Fake.Instance<CrmExecuter>(Members.ReturnRecursiveFakes);


      Isolate.WhenCalled((CustomerApi.ReadCustomerRequest r) => fakeCustomerApi.ReadCustomer(r))
        .AndArgumentsMatch(r => r.CustomerId == testPartnerCustomerId)
        .WillReturn(new ReadCustomerResponse()
        {
          Customer = new Customer()
          {
            IsPartner = true,
            InternalReference = "PAR1999"
          }
        });

      Isolate.WhenCalled((CustomerApi.ReadCustomerRequest r) => fakeCustomerApi.ReadCustomer(r))
        .AndArgumentsMatch(r => r.CustomerId == testCustomerTemplateId)
        .WillReturn(new ReadCustomerResponse()
        {
          Customer = new Customer()
          {
            IsPartner = false,
            InternalReference = "XXX1111",
            Services = CustomerApi.ServiceTypes.WebUrlFiltering
          }
        });

      Isolate.WhenCalled(() => fakeProvisioningCustomerApi.CustomerValuesCheck(null))
        .WillReturn(new ReadUniqueCustomerValuesCheckResponse()
        {
          CustomerUnique = UniquenessResults.Unique,
          ExternalReferenceUnique = UniquenessResults.Unique
        });

      Isolate.WhenCalled(() => fakeProvisioningCustomerApi.ProvisionOrganisation(null))
        .WillReturn(new ProvisionOrganizationResponse()
        {
          CustomerId = testNewCustomerId,
          InternalReference = testNewFinanceId,
          OptimisticLockValue = new byte[8]
        });

      Isolate.WhenCalled(() => fakeProvisioningCustomerApi.WritePrimaryLogin(null)).ReturnRecursiveFake();

      Isolate.WhenCalled((CustomerApi.ReadCustomerRequest r) => fakeCustomerApi.ReadCustomer(r))
        .AndArgumentsMatch(r => r.CustomerId == testNewCustomerId)
        .WillReturn(new ReadCustomerResponse()
        {
          Customer = new Customer()
          {
            ParentId = testPartnerCustomerId,
            Id = testNewCustomerId,
            Services = CustomerApi.ServiceTypes.None
          }
        });

      Isolate.WhenCalled((CustomerApi.ReadWebUrlFilteringServiceRequest r) => fakeCustomerApi.ReadWebUrlFilteringService(r))
        .AndArgumentsMatch(r => r.CustomerId == testCustomerTemplateId)
        .WillReturn(new ReadWebUrlFilteringServiceResponse()
        {
          WebUrlFilteringService = new CustomerApi.WebUrlFilteringService()
          {
            CustomerId = testPartnerCustomerId,
            OptimisticLockValue = new byte[8],
            WebFilteringAlert = new CustomerApi.WebScanningCustomAlert()
            {
              CustomText = "XXX",
              DefaultText = "UYYY",
              UseDefault = true
            },
            WebQuotasAlert = new CustomerApi.WebScanningCustomAlert()
            {
              CustomText = "WWW",
              DefaultText = "VVV",
              UseDefault = true
            }
          }
        });

      Isolate.WhenCalled(() => fakeCustomerApi.ReadWebUrlFilteringPolicySummary(null))
        .WillReturn(new ReadWebUrlFilteringPolicySummaryResponse()
        {