I made a mistake when I created one of my UIViewController objects. When I created the files, I forgot to select the Target for iPad option.
UIViewController
<
Try this at your own risk:
First, back-up your original Xib file. Next, modify the second line from:
to
Next, open the source code of the xib, and in every ocurrence of the element:
Replace the value IBCocoaTouchFramework with IBIPadFramework.
IBCocoaTouchFramework
IBIPadFramework
Good luck!