Hi, Here are some of my questions that i hope can be answered. By the way i am on the latest beta. 1. Is it possible to make a wall that is only solid one way. eg i am building a speedway and i want to use an external pits. The speedway is fully walled all the way around. i want to cars to be able to drive out of the pits through a part of the wall, and then be solid to the racers on the other side. 2. When i export my track into rF, I can go into the track once. The next time i want to go in it just crashes to desktop. 3. I am using textured walls to make a crowd of people. They appear fine in BTB but on the racetrack they dissappear. You have to be super close to them for them to show up. Is there a way to make them apear at all distances or some other fix? Btw, it is a dds file. Hope that makes sence Thanks, Mitch.