unity splash freeze

Hi there! I’m trying to build an example app of Vuforia AR for iOS.
Finally after lot of tests and lot of reading hours, I could make it run, it builded ok and it generated an icon in my ipad desktop. When I execute the app it display the unity splash image and it never goes out, only if I quit the app. I NEVER can see the camera view!!!..
Any ideas why is this happening?
Im using:
-Unity 3.5.0f5 NOTpro version(i got it with the promotion)!!
-Xcode 4.3.1
-iPad2 with 5.1(9B176)
-Vuforia 1-5-9 for iOS

Im really new at Mac and iOS development. Any ideas?
If you need some extra information, please tell me!
Maybe this topic has any relation http://forum.unity3d.com/threads/126...stpone-upgrade) ??

Pascual

Xcode 4.3.1

I’ve seen people reporting errors when building Unity with the latest version of Xcode. See here.

Can you try building with an older Xcode version?