ios常见错误之 Failed to instantiate the default view controller for UIMainStoryboardFile 'Main' - perhaps the designated entry point is not set?

Failed to instantiate the default view controller for UIMainStoryboardFile 'Main' - perhaps the designated entry point is not set?

这是因为给你的StoryBoard没有设置默认显示的controller，

解决方法：

from：http://my.oschina.net/u/936286/blog/316565