Thanks for the replies guys. Yes, changing the date back and forth to July and back to today's date put leaves on the bare trees. However my CMP still says I have SpeedTreeGroups that don't show up in Surveyor. I did download a couple of mcguirel's and gwapo50's trees, and they work. Is there a limit to how many of these can go on a route? The one I'm doing is fairly large, and I haven't really gotten into placing landscape and textures yet. I reset the draw distance down to 3000m to see if this helps. My computer has 2-cores, 4-processors, 12gigs of RAM, and 1 gig of RAM on the video card, also running Windows 8. The machine is only a month old. Any other thoughts or suggestions are greatly appreciated.