Test uses NUnit and Isolator V7. Pass when run using Resharper but fails with nCrunch

System.Reflection.TargetInvocationException : Exception has been thrown by the target of an invocation.
----> System.NullReferenceException : Object reference not set to an instance of an object.
at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
at System.Delegate.DynamicInvokeImpl(Object[] args)
at System.Delegate.DynamicInvoke(Object[] args)
at gs.c()
at dj.a(Boolean A_0)
at dp.b(Boolean A_0)
at i1.b(Boolean A_0)
at i1.a(Object A_0, Boolean A_1, Func`1 A_2, Action A_3, Action A_4, Action A_5)
at i1.b(Object A_0)
at TypeMock.ArrangeActAssert.ExpectationEngine`1.a(TResult A_0)
at ...

The test fails on a line that looks like this:
[Test, Isolated]
public void MyTest()
{
const string sessionId = "session-1";
Isolate.WhenCalled(() => OperationContext.Current.SessionId).WillReturn(sessionId); // <-- fail here

The code fails before it even reach my class under test

I'm tried using 7.0.4but I think it would happen with the latest 7.0.5 as well.

I've got the same issue, Is there any new data or hack to share?

Solved - Upgrading to Isolatror v. 7.0.9 solved this issue.