Can't drag to Storyboard anymore after installing Xcode 5

Question

I installed Xcode 5 (currently in pre-release). Installing Xcode 5 does not overwrite Xcode 4. Now what happens is that when I open my old projects in Xcode 4, I can no longer create new objects on the Storyboard by dragging and dropping GUI elements.

Has anyone experienced this?

** EDIT **

If you find yourself in the same situation. Just restart your computer.

I really spent a good hour researching this, and sometimes we are too stubborn to think that a simple reboot can solve the problem.

Answer 1

If you find yourself in the same situation. Just restart your computer.

I really spent a good hour exploring this, and sometimes even the best of us forget to try rebooting first.

Answer 2

If you remember that the first time you opened the Xcode 4 storyboard in Xcode 5, you were prompted with the following message.

The contents of the above screenshot should answer your question.