I've recently created a new worldspace, it's a forest type thing.
In the CK and Ingame, gaps appear between the cells, and the water starts glitching out...
Can anyone help?

Heres some pics of the problem -
(Can't post links... damn...)

TL:DR - The cells are all at different heights, and some don't even render.

use the landscape editing tool to smooth the ground between cells.