I have been working with CoreData recently for an app of mine. Oddly enough it is crashing only on the iPad Air with iOS 7.x. I have run in both on physical devices and the iOS simulator, it never fails to crash on the Air, and always runs elsewhere. (It does not crash on the iPad Air iOS 8.0)I have been working with CoreData recently for
阅读背景：
NSEntityDescription仅在iPad Air 7.1上返回nil
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