Build Information
Release ID: 601005441
Git revision: 68292d1ab289911c815ddc715dd7cc29a9752f9f
Build date: 2016-09-09 04:43:23-04
Xamarin addins: ed25d008672663eeb9db55f1ccecb3c24d2fd3b2
Build lane: monodevelop-lion-cycle8

更新Xamarin 到最新版，Android，IOS项目均无法正常编译、运行。

运行IOS项目报错：
/Library/Frameworks/Mono.framework/External/xbuild/Xamarin/iOS/Xamarin.iOS.Common.targets: Error: Error executing task Codesign: Required property 'SigningKey' not set. (layout.iOS)

解决办法(创建一个开发者证书或等待更新)：

With Xcode 8 there are changes that require a valid cert for even putting it on the simulator. The easiest way is to create a developer cert with a * wildcard so you will be good to go.
There is another PR for an upcoming release that will do a fake sign for simulator builds: https://github.com/xamarin/xamarin-macios/pull/833

详情:https://github.com/xamarin/xamarin-macios/pull/809/commits/24161e2efd56d96464e5e43d54ae73c8f547fd4a

运行Android项目报错闪退：

解决办法：(可能是模拟器出现问题)
真机环境运行正常，模拟器闪退。