I think I found a serious error in the new version of Xcode 5.1 after the update, when my cells begin to disappear when I scroll down.

When I click on them a couple of them 
When I scroll up after that, everything is fine, and this problem only occurs on iOS 7.1. In iOS 7.0.3, everything works fine.

I found a little hack to make it work on iOS 7.1. To do this, I download the old version of Xcode (5.0.2) and build the application that I installed on my device with iOS 7.1, in this case everything works fine too. Therefore, I believe that some errors in Xcode 5.1
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