Older SDK disappeared after installing new Xcode version

Question

Why are old SDKs beeing removed when installing a new version of xcode with new Iphone SDK ? Now we have v4, what settings do I have to make in order that the apps still wor

Answer 1

Set the Base SDK to 4.0 and Deployment Target to 3.x. Or, in modern conditions, the Base SDK to Latest and Deployment Target to whatever you need.