iOS5 Storyboard error: Storyboards are unavailable on iOS 4.3 and prior

Question

I\'ve built a small app using storyboards and it ran great. Just before final testing I decided to try it out to see if it runs on iOS 4.3. I clicked on the gray 5.0 in the

Answer 1

At last, an elegant workaround that seems to do the trick for me! (I sure hope it works for everyone else. This one's stubborn.)

Once your settings are back safely in iOS 5-land, try Cmd-Option-Shift K (aka "Clean Build Folder..." from the menu - hold down Option to see it), then build.