I've added a menu and have some pages, but when I go to configure the menu component, Parent Node and Active Node both show only: [object Object]
And the page throws an ErrorException on the front end.
Am I missing a step here?
That sounds like some sort of caching issue. There are some problems with that in the beta from what I've read, I'm not sure of the exact details. The fix is to log out and back in again, so I'm glad it's all working the way it's supposed to for you now :)