我在xcode5下写的代码,我下载了iOS6的模拟器,我用iOS6和iOS7的模拟器切换运行,有的时候可以运行有的时候不可以运行,报错: 2013-11-17 16:49:04.049 sim[4747:303] /Applications/xcode5/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/usr/bin/sim: Did not find an executable file at the path:…