I'm having a very frustrating and show-stopping problem when trying to use the Panel Tool. Maybe I'm not using it correctly. But right now I can't figure out how to get my menus to display consistently. I'm using UISK and NGUI 3.0.8f3 (and Unity 4.3.1f1 under Windows 7 SP1). As far as I can tell, everything is up to date.
I made a copy of the UISK Menu Scene and called it "options test scene". I played around a bit with the Panel Tool, enabling and disabling some panels so I could see what they looked like, but then set things back to where they began, with only the UIRoot, Main Menu and FPS panels checked. Hit play in the editor and my main menu shows properly, but when I click the Options button, the main menu panel disappears (appropriately), but the Options panel does NOT appear! Looking in the Hierarchy I see that the Options panel game object has been activated (it was activated when I clicked the Options button on the main menu panel), but none of its children are active, so no widgets are actually showing. Why aren't the children being activated recursively? The only thing I can guess is that somehow the Panel Tool has gotten locked into a bad mode and toggled something to the opposite of what UIWindow is expecting, so they're fighting against each other. Or maybe it's something completely different. I'm just guessing.
This is very confusing! Shouldn't this just work?? The UIWindow functionality (and example scenes) are the whole reason why I bought the UISK.