Converting Project from Unity 3.4 to Xcode produces many errors

I am developing an iOS game initially in Unity 3.3. The tests that I periodically made, converting it to Xcode, gave me good results after resolving some initial issues I encountered.
Recently Imade something usually not advised: I upgrade from Unity 3.3 to Unity 3.4 (I now, it was not a good idea!). After that when I have tried to convert my game tests from Unity 3.4 to Xcode I get many compiling errors of the kind NSAutorelease.pool. I believe this is not a problem related to the game but to a bad setup either in Unity 3.4 Built Settings or in Xcode.
I am working on Xcode 4.0.2 on an iPad running the version 4.3.3

Any help would be greatly appreciated.

SOLVED! Reinstalling SDK-Xcode was the solution. Thanks, DREAMORA