Dependency injection works in Debug build, but not in Release build

Hello Support,

I am using POCO view-models with your MVVM framework.  Also, I am using Autofac and hooking into the static root context event like so (from Program.cs):

C#
MVVMContextCompositionRoot.ViewModelCreate += (s, e) =>  
{  
      using (var scope = rootContainer.BeginLifetimeScope(  
           b => b.RegisterType(e.RuntimeViewModelType).As(e.ViewModelType)))  
      {  
          e.ViewModel = scope.Resolve(e.ViewModelType);  
      }  
};  

Finally, I'm using constructor-based injection.  Here's an example from one of my view-models (NewCompanyControlViewModel.cs):

C#
protected NewCompanyControlViewModel()  
{  
}  

public NewCompanyControlViewModel(  
    IContactModelFactory contactModelFactory,  
    IContactCategoryViewModelFactory contactCategoryViewModelFactory,  
    IContactDraftModelFactory contactDraftModelFactory,  
    IHashCodeProvider hashCodeProvider,  
    NewCompanyViewModelValidator validator)  
{  
    _contactModelFactory = contactModelFactory;  
    _contactCategoryViewModelFactory = contactCategoryViewModelFactory;  
    _contactDraftModelFactory = contactDraftModelFactory;  
    _hashCodeProvider = hashCodeProvider;  
    _validator = validator;  
}  

Strangest thing: All of the depdencies are injected correctly in a Debug build, but are not injected in a Release build.   Also, I had to add a parameterless constructor to get this to work at all in Release.  The parameterless constructor is not necessary in Debug.  In Release, if I remove the parameterless constructor, the application fails with an exception indicating that it can't find a parameterless constructor (paraphrasing).  As for view-model constructor, here is the relevant code from the corresponding view (NewCompanyControlView.cs):

C#
private void InitializeBindings()  
{  
    mvvmContext.ViewModelType = typeof(NewCompanyControlViewModel);  
    mvvmContext.RegisterService(MessageBoxService.CreateXtraMessageBoxService(ParentForm));  

    var context = mvvmContext.OfType<NewCompanyControlViewModel>();  

    ...  
}  

For the life of me I can't figure out why this would work in Debug, but not in Release.  The only two things that come to mind revolve around the fact that your framework creates dynamic view-model types and that execution security might have something to do with it.

Any idea as to what could be going on?

Thank you.