Need help with Corona SDK

What I am trying to do is get my app to grab the user's profile ID and then insert that ID into a URL I've used code from [login to view URL] but my problem is that I have upgraded to Mountain Lion and when I try to build for iOS it displays this error..... The iOS SDK could not be found. Please install the iOS SDK. I've uninstalled and reinstalled Xcode and still nothing and since the corona simulator doesn't support fbconnect, I cannot test the code. What I would need you to do is look over this code and see if anything is wrong and then write the code that takes the user's profile ID that the app gets and insert it into a URL.