Error in App, maybe in Build

I have an app that works fine in Android. I’m trying to build it in iOS but I have this trouble. In Corona Simulator works fine too, I have no error messager. But when I build the app and send it to de iOS Simulator, doesn’t work. I have this message:

‘unsupported local ios sdk is 9.1 wich does not match’

But I can go on. And in other app I have no troubles. ¿How can I detect where is the error? 

Thanks for any help.

Similar discussion here

Similar discussion here