This is probably a really stupid question, but I've been having a lot of problems with viewing objects in the GECK's render window. I'm modding NV at the moment, and I've noticed that a lot of premade cells (the King's headquarters, for example) won't display many objects. One or two corridors and most critters show up in the render window, but the rest of the cell is blank. Adding any sort of object (furniture, clutter, whatever) to the cell causes that object to vanish, too. They WILL display properly if added outside any playable areas, but as soon as they are moved into a playable region (one of the visible corridors, say) they vanish. All of the objects are still there, of course, and they show up in the Cell View menus, but I can't see them or manipulate them via the render window.
What's going on? Has it got something to do with this newfangled Room & Portal system? If it's working as designed, is there any way I can make the objects visible again? Thanks.