iOS simulator出现问题，提示：
An error was encountered while running (Domain = FBSOpenApplicationErrorDomain, Code = 4)
解决方案：
[iOS Simulator] >>> [Rest Contents and Settings...] >>> [Reset]
参考：解决问题
【iOS开发-27】解决方案：An error was encountered while running(Domain=FBSOpenApplicationErrorDomain, Code=4)
原文：http://blog.csdn.net/weisubao/article/details/39716707
