I am developing an application for iOS/Android/BB Tablet that requires the use of the camera. During the development, I have tested the functionality of the camera multiple times with debug builds of the app on multiple devices, including the Blackberry Playbook. I recently did a signed release build and noticed that any time I call CameraUI.isSupported, it no longer works on the Playbook, even though the release build works just fine for 5+ other devices.
I have tried building the project with AIR 2.6, 2.7, and 3.1 with BB Tablet SDKs 1.1.1 and 2.0 beta. I am installing the signed app via the command line using the BB SDK deploy tools. My settings in Flash builder (Build Packaging -> BB Tablet OS -> Permissions) have "use_camera" checked. The same settings are reflected properly in my blackberry-tablet.xml. Looking at the application permissions on the Playbook after installing the app shows use of the camera enabled so I don't think it is a permissions issue.