Hi, iam working on my first track wich will be decline in two layouts (one with chicane the other without)...i dont know how to do with .mas files. The only difference between the two layouts will be that i will add or remove some cones in order the close or open the chicanes. I created two additionnal .mas for each layout with only the tracks and the cones (no terrain, no objects...nothing just the new cones, the aiw and cams). i edited properly the .scn files for each layouts to refer to the .mas files...so at the end i have: mytrack.mas (the big one with everything), mytrackmap.mas (all dds) ,mytrack_chicane.mas (few additional cones), mytrack_nochicane.mas(few additional cones)....Finally my track didnt load in rfactor "error gmotor" Is that the correct way to do a multi layout track? Sorry for my english, iam french Thanks for helping.