Wikitude app crash (poi adding problem) iPhone

I am currently working in iPhone application in which I have used wikitude api.

I am successfully integrate and run the app but my app is crash while adding poi over wikitude camera view. And my app throws exception of "CORE ANIMATION CALAYER NAN".开发者_StackOverflow I am getting this issue in iPhone 4.0.

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Please try the new version of the Wikitude iPhone API which should fix the described issue. You can download it from http://www.wikitude.org/developers

Cheers, Nicolas