longhornLA

I am having problems with trees that I have created as props. If I view my site from an axon view, then everything is fine. But when I utilize the perspective view, or create an animation the trees that are behind others have gray crossed planes that show up. Is there any way to get rid of this or is this something that happens if you use tree props?

I am extruding a building form and landscape forms from a plan. Initially, the building extruded properly, but now that I edited some of the walls and added doors... only the new doors are extruded and can be viewed in 3D. When I try to extrude the building an error message pops up that says....this operation cannot be performed inside an extrude, sweep, or multiple extrude object. Press Done in the databar to exit the object. What does that mean? where is the "databar"? what can I do so that I can see the modified building form in 3D? why are the doors the only 3D objects that are showing up? Please HELP!