Norm, before you install, you will have "vegetation.bgl" in the Scenery/Global/Scenery. Once you install TF, that changes to "vegetation.bgl.off" and a new one appears "vegetation_TF.bgl". That is happening for me just fine. Also the Scenery Library is activated. Somehow, though, it is not affecting the trees. For me, I don't think it is installing.
One major reason I have for really trying to get this to work is TWC II (coming soon). I've got the basics for a "float trip" down the river with 9 places to visit and pull out. Can you imagine a float trip on that beautiful river, with all that Rod has done, and have the water moving and the trees on the bank moving? That will be something.
Off subject: If anybody sees a boat that has a 5 hp motor or no motor but moves, I'm interested. We need something to "float" in.