iOS simulator出现故障，提示：
An error was encountered while running (Domain = FBSOpenApplicationErrorDomain, Code = 4)
解决方式：
[iOS Simulator] >>> [Rest Contents and Settings...] >>> [Reset]
參考：解决这个问题
【iOS开发-27】解决方式：An error was encountered while running(Domain=FBSOpenApplicationErrorDomain, Code=4)
原文：http://www.cnblogs.com/mfmdaoyou/p/6937600.html
