Func Factories cause a StackOverflow exception

First of all, awesome project, thumb up, hope you continue this project.

I'm in a unique situation that I need a child view model to create a new parent view model; the parent view model is just a kind of content container, so it can create child view model dynamically according to the input model info. Constructors look like this:
```
ParentViewModel(Func childViewModelFactory)
ChildViewModel(Func parentViewModelFactory)
```
When build it'll cause a StackOverflow. I've read "Circular Dependencies" wiki, but i still do not know how to configure a Func Factory.

Then I try to use Abstract Factories, it can avoid the stackoverflow exception, but I still wonder why Func Factory fails in this scenario.

Thank you in advance