xcode6.3

The following code shows build error in Xcode 6.3 Beta 3 . The code works in Xcode 6.2 and Xcode 6.3 Beta 2. class MyView: UIView { override init() { super.init() // Some init logic ... } override init(frame: CGRect) { super.init(frame: frame) } required init(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented") } } Error message initializer does not override a designated initializer from its superclass Workaround? There is a possible workaround of creating a protocol with init methods mentioned in Beta 3 release notes . I could not make it work both both init and init

Update 2: I found a workaround which is to synchronize MOC deallocating and saving. Please see the updated project. https://github.com/shuningzhou/MOCDeadLock.git Note: I made it fail more aggressively. Don't run it on a real device! Update: A sample project to demonstrate this issue. https://github.com/shuningzhou/MOCDeadLock.git XCode 6.2: Unable to reproduce. XCode 6.3: Reproducible. XCode 6.4 beta: Reproducible. ========================== The Issue =============================== Our app randomly stuck on OSSpinLockLockSlow after upgrading to XCode 6.3. In our project, we used NSOperation

I just downloaded Xcode 6.3 beta 4, and my WatchKit app now fails to build with an error: Embedded Binary Validation Utility Error error: WatchKit apps must have a deployment target equal to iOS 8.2 (was 8.3) The iOS app and the project actually have a deployment target of 7.1 and always have, but we've been working with the iOS 8.3 SDK for our WatchKit component (using Swift 1.2) without issue using Xcode 6.3 beta 1, 2 and 3. This error only arose with Xcode 6.3 beta 4. Anyone else have this error, and know how to fix it? Select your project settings and go to "TARGETS". Click on your Watch