After upgrade XCode from 4.2 to 4.3 I\'ve got below problem. I can\'t build it. Do you guys have idea how can I resolve this problem? even some clue would be helpful to me.<
Looks like this was either an accidental (or on purpose) omission on Apple's part.
If (and only if) you are a registered Apple Developer, you can log into the Apple Developer Forums and if you copy this linked search query into your browser address bar, you will see other people have had the same problem.
For now, it looks like you can only use SenTestingKit on the simulator.