iPhone app gets stuck on splashscreen...

Post the debug log from XCode. That should help narrow down the issue.

Posted the error. Any idea what it means?

Are you accessing a member variable or method before it is loaded? Or are you accessing a static variable before it has been set? This sounds like a race condition. What are your Awake() and Start() functions doing in your initial scene.

I have exactly the same issue. I last time built my project over a month ago with trial version. Now I bought the license for iOS publishing, changed nothing on the code and tried compiling. I also updated the provisioning file, and let my mac do some automatic updates which I reckon should not affect this matter at all. Hope this helps narrowing down the cause.