Xcode 4.2 Warnings when dropping Nav Controller on Tab Bar in IB

Question

I\'m developing an app which is iOS 4 compatible, so my deployment target is set to iOS 4.0.

Whenever I drop a UINavigationController onto a UITab

Answer 1

Just uncheck the "Defines Context" checkbox in the attributes inspector. (Double-click on MainWindow.xib, select the navigation controller, then go to View->Utilities->Attributes Inspector.) That'll get rid of the warnings.