Hi! I am getting a RED triangle with a WHITE coffin shape in a few of my MODS in FO3. The rest of the mods are fine.I have W7 64bit o/s, dual core cpu and 4 gig ram.Any help would be appreciated. The glich is manly in doorways or infront of a desk, as in the bomb shelter mod. the door glitch is in a lot of doors in Last child of Gallifray?

That's actually an exclamation mark, not a coffin shape. And if you're seeing it, it means you have some missing meshes. Make sure you've installed your mods properly.