Why do I get flying grass in my new worldspace?

[PrivateJoker]

Hello again Nexusmods!

 

I think I have quite a good drift going with creating my mod but it is also annoying that i get bugs like this that i dont know what to do with and that there are not written any tutorials about this. Maybe we can start a trend here at nexusforums, that when you solve a problem you have you add it to the wiki. It will be so helpful for other newbies encountering the same problem.

 

Here is the problem. I am going to create a new worldmap where there is going to be a huge ark like boat. The biggest problem is that there is floating grass in the horizon. Do I have some sharable worldspace data errors in which boxes are checked or what is the problem here?

 

Thank you for all your help :)

 

http://img696.imageshack.us/img696/7057/utennavnc.png