

iPhone/iPod touch development requires the iOS 3.1 SDK. Interface Builder was unable to open the document "Empty.xib". This version of Interface Builder does not support documents of type "Interface Builder Cocoa Touch Document (XIB 3.x)" targeting "iPhone/iPod touch".Īnd this one if I try to make a blank one, of any other the other options:

Now I can use Xcode fine (as far as I can tell) but Interface Builder gives me this error when I try to make a new iPhone Application Template/Project: I bought the DevKit but had some problems opening Xcode, I realiased I'd upgraded to Lion since I downloaded it and needed to upgrade, so I did, so Xcode 4.3. I'm beginning a project for University I'm making an iPhone application.
