Error iOS 3.1 Xcode 4.2

I can't get my game or any games for that matter, including the Unity Penelope demo to run on a 1st Generation Ipod touch. the OS that is installed is 3.1.3 and I am using Xcode 4.2

and xcode points me to this code from AppController.mm

else { if ([UIScreen mainScreen].scale > 1.0) launchImageName = @"Default@2x.png"; else

Help needed, thanks in advance. launchImageName = @"Default.png"; }