Any help would be appreciated. I made a new house mesh that I planned on using. I've done everything I can while following tutorials on getting new weapons and armors into the game, but I've just hit a wall and can't find anything on getting new world objects in. It shows up fine in nifskope, all textured, everything looks fine. But when I open the creation kit, and try using it there, it just shows up as a red exclamation mark and tells me "Marker_Error:0". I've added a collision model to it in 3dsmax if that makes any difference.
Thanks.