I have an app that has suddenly gotten a non-public API error after uploading the archive to TestFlight. The error is posted in full below, and has never occurred before. I'm not using the _UIDeviceOrientationDidChangeNotification symbol but I do have two extensions that use UIDevice.orientationDidChangeNotification. However those extensions are not included in the target for the two watch extensions where the error occurs. Has anyone seen this problem before or have some advice? 90338: Non-public API usage. The app references non-public symbols in Watch/watchkitappBeta.app/PlugIns/watchkitappExtensionBeta.appex/watchkitappExtensionBeta: _UIDeviceOrientationDidChangeNotification,The app references non-public symbols in Watch/watchkitappBeta.app/PlugIns/watchkitappExtensionBeta.appex/PlugIns/watchkitappWidgetExtensionBeta.appex/watchkitappWidgetExtensionBeta: _UIDeviceOrientationDidChangeNotification. If method names in your source code match the private Apple APIs listed above, altering your method names will help prevent this app from being flagged in future submissions. In addition, note that one or more of the above APIs may be located in a static library that was included with your app. If so, they must be removed. For further information, visit the Technical Support Information at http://developer.apple.com/support/technical/