It's seems to be something related with the camera interface, both native and not native camera access samples don't work. And that means that app shows up, but only a black screen in showed.
Native camera throws some errors like this:
12-10 16:10:24.179: E/OpenCV::camera(2647): calling (*pGetPropertyC)(0x29c8a8, 2)
A simple example like this (http://marakana.com/forums/android/examples/39.html) works, but I don't see what is the problem. Maybe the surface created?