Augmented reality in iphone using wikitude API

I am working on the Augmented reality app in iphone. But while running the application i am getting the following warning and on coming of this warning i am not able to touch any of the screen. The warning is"CoreAnimation: ignoring exception: CALayer position contains NaN: [nan nan] " P开发者_高级运维lease suggest me regarding it.

Thanks in advance

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