If you are getting compile time errors regarding _CGRectZero in the UITableViewController, it’s probably because you don’t have the Core Graphic Framework included in your project.  To resolve this problem, try the following steps:

  1. In your project, expand the “Targets” section
  2. Double click on the name of your application
  3. A window will popup.  Click the “General” tab
  4. Click the + symbol in the bottom left corner of the window
  5. Add the “CoreGraphics” framework
  6. Try recompiling your application

This solved my issues – hope it helps someone.