I have installed FP9 on my render nodes with the "render node" install option and when I try to use distributed rendering (vray) I get a message saying "Forest Pack is configured to use a local license....."
Once the message comes up I can click OK then it syas cannot load a license (error code 2) so I click OK and then it starts loading and rendering the scene.
This scene has Forest system and Forest Ivy.
When I try to use distributed rendering on a scene with only a Forest sytem in it there are no issues with Forest Pack looking for a local license so the DR just works as expected.
So it looks like the Forest Ivy plugin is looking for a license even though it is installed as a "render Node"
Let me know if you need any more information
Chris jackson