Android camera2 API error on createCaptureSession call

Question

Trying to get camera2 to work with the API, but I get some exception when trying to create a capture session. The Surface list contains the only nonempty Surface. The API docs state that the last parameter can be left as null to use the current stream looper. I also tried creating a separate thread to do this, but it did not fix it. It all happens on the Galaxy Note 5 powered by Lollipop

public void onOpened(CameraDevice camdev){
if(camdev!=null) {
    try {
        CaptureRequest.Builder captureRequest = camdev21.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
        captureRequest.addTarget(imageSurfaceList.get(0));
        camdev.createCaptureSession(imageSurfaceList, new CaptureSessionStateHandler(), null);
    } catch (CameraAccessException e) {
        e.printStackTrace();
}
}

Any clues? Maybe the Samsung Camera2 implementation is just crap, and should I use the discounted camera class (I already have this to work)?

11-20 00: 24: 15,620 3097-3651 /? E / CameraDeviceClient: beginConfigure: Not yet implemented.

11-20 00: 24: 15,620 3097-4969/? E/CameraDeviceClient: createStream: bufferProducer null

11-20 00: 24: 15,620 25601-25601/? D/AndroidRuntime:

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: FATAL EXCEPTION:

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: : com.made4engineering.socialselfieapp, PID: 25601

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: java.lang.IllegalArgumentException: ,

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at android.hardware.camera2.utils.CameraBinderDecorator.throwOnError(CameraBinderDecorator.java:114)

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at android.hardware.camera2.utils.CameraBinderDecorator $CameraBinderDecoratorListener.onAfterInvocation(CameraBinderDecorator.java:73)

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at android.hardware.camera2.utils.Decorator.invoke(Decorator.java:81)

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at java.lang.reflect.Proxy.invoke(Proxy.java:397)

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at $Proxy2.createStream( )

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at android.hardware.camera2.impl.CameraDeviceImpl.configureOutputsChecked(CameraDeviceImpl.java:378)

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at android.hardware.camera2.impl.CameraDeviceImpl.createCaptureSession(CameraDeviceImpl.java:437)

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at com.made4engineering.socialselfieapp.CameraHandler $CameraStateHandler.onOpened(CameraHandler.java:471)

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at android.hardware.camera2.impl.CameraDeviceImpl $1.run(CameraDeviceImpl.java:118)

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at android.os.Handler.handleCallback(Handler.java:739)

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:95)

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at android.os.Looper.loop(Looper.java:145)

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:6897)

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at java.lang.reflect.Method.invoke( )

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:372)

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at com.android.internal.os.ZygoteInit $MethodAndArgsCaller.run(ZygoteInit.java:1404)

11-20 00: 24: 15,620 25601-25601/? E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)