Hi! I'm new to using the creation kit and I'm experimenting with making levels using the cave and nordic kits. My question is, when
I test out the levels, I found that some parts of the cave or dungeon are 'black'. There are black spots on the walls, or floors as if the objects
there are missing. This did not happen to me when I followed the tutorials. What could be the reason for this/

Thanks!

Does it appear like that in the CK? Can you provide screenshots? That sounds like a very odd issue indeed...

Have you made portals around the rooms? If the box doesn't completely cover the room the edges and bits that aren't covered will be black. I'm new to the CK as well but that's what I encountered anyway...