Rename a class in Xcode: Refactor… is grayed out (disabled). Why?

Question

Why is Refactor... grayed out (disabled) in Xcode?

I\'d like to rename a class.

Answer 1

Had this problem as well. I ran through trying to find missing SDKs, saving files, and looking for Objective-C++ code as mentioned above, and all it took to fix my machine was rebooting XCode.

Seems a little buggy still.

BTW, this was for XCode 4.0.1