Helfane

Hi, I'm not sure if this is the right place to post this (This is my first time posting anything on the forums here) but I need help. I'm going to begin a mod with a new world space, but I have a problem, the landscape won't render in the Creation Kit. This same problem is happening when I load the Skyrim world space in the Creation Kit and all I see is floating grass and rocks. If anyone knows how to fix this I'd really appreciate an answer.