Okay, I think I managed to trace the problem of invisible items. It has to do with the "eye-candy" stuff. I was trying to race on Tabletop, and noticed that I was crashing all the time into stuff that wasn't there. It was just impossible to race on it without trying to memorize where all of the invisible stuff was located beforehand. I also noticed that there was one section of the tract that was invisible. I was racing on air pretty much. Since I have a piece-O-crap video card, I keep all the eye candy stuff turned off, or it gets very choppy. So I decided to do a lap with all the eye-candy turned on, and low and behold, lots of items showed-up that I couldn't see before. Let me see if I can post some of the screen caps. The first is the big robot in the middle of the road.