Could me a memory issue with the game or the computer itself. I recently built a track by the airport with close to 1,000. If I spend enough time at this track, then go back to the city, all my trees are purple/pink missing textures as well. Never had this issue with any maps, except for menyoo. Maybe a bug?

I tried code walker. Am I missing something cause I was able to do with object spooner in minutes something that would have taken hours to do.