I'm working on a Multi Demention Coaster called X3 like X but different I made on Rct3 only problem so far is either has to do with Vista but the trains flip too much too fast it's hard to get the cars to face a certain direction hopefully I'll have it fixed and done soon here's some pics

I don't think the flipping is a Vista problem, rather just a glitch in the game. One of my friends is working on a X2 recreation and is saying he has the same problems.