what are your options set to for in the proejct options? you need to tell it is uses ios5 as the deployment
在设置选项中把debug，和release的sdi都设置成iso5，就不会报错了。
本文转自博客园知识天地的博客，原文链接：The run destination iPhone 5.0 Simulator is not valid for running the scheme 'MyApp'，如需转载请自行联系原博主。
