Missing Base SDK errors after upgrading to SDK 4.2

I am getting issues when I try building my Unity projects. I tried all the fixes mentioned: Iphone SDK version: 3.1.3, unknown, and 3.2. No matter what I try I get the same error and the app never compiles.

I tried changing the settings in Xcode as mentioned by some post: http://answers.unity3d.com/questions/13393/unity-iphone-player-settings-iphone-sdk-version-missing/14457

Does anybody have any solution??? Please

Going into the project settings in xcode and setting the proper Base SDK (which is one of the answers in that link you gave) should take care of it.

Only option i have is 4.2 and that fails? What version of Base code do you have?

Go into the active target settings (Edit Active Target) instead of project settings

There switch base sdk to 4.2 and go down to deployment target and set that to what you want to support at minimum (3.0 or higher)