我也遇到了这个问题，最后我通过以下步骤解决了这个问题:

I also got this problem and finally I solved this by following procedure:

1. 打开 XXXXXX.storyboard
2. 在 Xcode 的右侧视图中打开 Identity and Type 选项卡.
3. 将Document Versioning中Development的值设置为Xcode 4.2"(我的默认值为Default Version (Xcode 4.1)".
4. 将 Deployment 的值从 Project SDK Version (iOS 5.0) 更改为 iOS 5.0，然后再改回 Project SDK Version (iOS 5.0)

重建项目，错误应该得到解决.

Rebuild the project and the error should be resolved.