FileNotFoundException while watching variables in debug mode

Question

I have this piece of code (well I have the issue everywhere)

When I debug this, break in the funcion, try to watch some variables. And I keep getting a FileNotFoundException

    public void PayrollActivityCodeTest()
    {
        using(var pr = new ActivityCodeProcess())
        {
            pr.Add();
            pr.WorkingEntity.PayrollConfiguration.Provinces = PayrollProvincesType.QC | PayrollProvincesType.ON;

            pr.WorkingEntity.ActivityCodeId = "01";
            //pr.WorkingEntity.Rates.CodeByProvinceCollection.First().CodeValueCollection.FirstOrDefault().Value
            Assert.AreEqual(2, pr.WorkingEntity.Rates.CodeByProvinceCollection.Count);
        }
    }

But the "missing" DLL is in the folder, it's not readonly or any other flags Windows has.

Answer 1

Use managed compatibility mode has to be activated