:scratch: Hmm... do you have any configuration mods in your game? (like replacement ".txt" files that add new wall types, enables foundations to use doors/windows, etc.)
If not, you might have something up with your user startup cheats... quoted from MTS2 Wiki Game Help section:
If you switch the cheats off but then find that your objects will not snap to grid when you restart the game, then you most likely have a userstartup.cheat file with the cheat code in it. To delete the file, or to just remove the snapObjects/moveObjects lines from the file, please see
Game Help:Userstartup.cheat.
Not sure if this is what's going on, but it's worth a shot. :angel: