java.lang.RuntimeException: Fail to connect to camera service

12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765): Uncaught exception!
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765): java.lang.RuntimeException: java.lang.RuntimeException: Fail to connect to camera service
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765):     at com.google.glass.camera.CameraManager.handleError(CameraManager.java:1974)
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765):     at com.google.glass.camera.CameraManager.handleError(CameraManager.java:1988)
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765):     at com.google.glass.camera.CameraManager.acquireCameraSynchronously(CameraManager.java:892)
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765):     at com.google.glass.camera.CameraManager.access$2600(CameraManager.java:65)
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765):     at com.google.glass.camera.CameraManager$PictureRequest.onExecute(CameraManager.java:540)
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765):     at com.google.glass.camera.CameraManager$CameraManipulation$1.run(CameraManager.java:278)
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765):     at java.lang.Thread.run(Thread.java:856)
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765): Caused by: java.lang.RuntimeException: Fail to connect to camera service
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765):     at android.hardware.Camera.native_setup(Native Method)
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765):     at android.hardware.Camera.<init>(Camera.java:374)
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765):     at android.hardware.Camera.open(Camera.java:330)
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765):     at com.google.glass.camera.CameraManager.acquireCameraSynchronously(CameraManager.java:889)
12-18 01:04:20.570: E/PriorityThreadFactory/CameraManager/cameraManipulationExecutor(1765):     ... 6 more
12-18 01:04:20.578: E/AndroidRuntime(1765): FATAL EXCEPTION: CameraManager/cameraManipulationExecutor-0
12-18 01:04:20.578: E/AndroidRuntime(1765): java.lang.RuntimeException: java.lang.RuntimeException: Fail to connect to camera service
12-18 01:04:20.578: E/AndroidRuntime(1765):     at com.google.glass.camera.CameraManager.handleError(CameraManager.java:1974)
12-18 01:04:20.578: E/AndroidRuntime(1765):     at com.google.glass.camera.CameraManager.handleError(CameraManager.java:1988)
12-18 01:04:20.578: E/AndroidRuntime(1765):     at com.google.glass.camera.CameraManager.acquireCameraSynchronously(CameraManager.java:892)
12-18 01:04:20.578: E/AndroidRuntime(1765):     at com.google.glass.camera.CameraManager.access$2600(CameraManager.java:65)
12-18 01:04:20.578: E/AndroidRuntime(1765):     at com.google.glass.camera.CameraManager$PictureRequest.onExecute(CameraManager.java:540)
12-18 01:04:20.578: E/AndroidRuntime(1765):     at com.google.glass.camera.CameraManager$CameraManipulation$1.run(CameraManager.java:278)
12-18 01:04:20.578: E/AndroidRuntime(1765):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
12-18 01:04:20.578: E/AndroidRuntime(1765):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
12-18 01:04:20.578: E/AndroidRuntime(1765):     at java.lang.Thread.run(Thread.java:856)
12-18 01:04:20.578: E/AndroidRuntime(1765): Caused by: java.lang.RuntimeException: Fail to connect to camera service
12-18 01:04:20.578: E/AndroidRuntime(1765):     at android.hardware.Camera.native_setup(Native Method)
12-18 01:04:20.578: E/AndroidRuntime(1765):     at android.hardware.Camera.<init>(Camera.java:374)
12-18 01:04:20.578: E/AndroidRuntime(1765):     at android.hardware.Camera.open(Camera.java:330)
12-18 01:04:20.578: E/AndroidRuntime(1765):     at com.google.glass.camera.CameraManager.acquireCameraSynchronously(CameraManager.java:889)
12-18 01:04:20.578: E/AndroidRuntime(1765):     ... 6 more
12-18 01:04:20.578: W/ActivityManager(221):   Force finishing activity com.google.glass.camera/.ApiTakePictureActivity

原因不明だが、カメラをクローズせずにアプリを起動したからかもしれない。
再起動して、正しいコードのアプリを動かせば問題ないと思われる。