WaterProcessor and Billboard Control

Hi guys

I am currently implementing something like a coverflow application (cf. itunes library) which is controllable with the kinect sensor.

I am having some troubles with the water processor (used for the reflection of the Images) together with the billboard control on my node.

When i add the billboard control to my node I can’t launch my application. I get the following exception:

SEVERE Application 15:25:14 Uncaught exception thrown in Thread[LWJGL Renderer Thread,5,main]
java.lang.IllegalStateException: Scene graph is not properly updated for rendering.
Make sure scene graph state was not changed after
rootNode.updateGeometricState() call.

The app starts fine if I don't add the billboard control to my nodes.
any ideas or hints?

I’ve seen this error when attempting to reflect anything that is not static. If this help at all /shrug