I hava a android tablet, Toshiba Folio 100 with Tegra2 processor and Android 2.2 Froyo. I compile from Unity 3D 3.4 an test example for testing ARCamera prefab. I install the generated APK file on the device (this devide only has a 1.3Mpixel FRONT camera, no rear camera), when I start the application, I see the Unity 3d logo on screen and the camera light turn on but the screen is black all time, I don'tsee any video on screen as the example says. It's a camera problem or a compatibility problem with my tablet.
Another case: the paparazzi v 1.3.1 apps don't start, freezes on Pixel Punch logo screen but the camera light turn on.
P.D. I'm using qcar-unity-installer-android-1-0-6.exe 09-Aug-2011