@Yu_Une
Just make one big terrain is what I would do
Not in Med but in Bruce or Terragen, these are also exellent
Landscape generators
@ulillillia
Quote:
It's a bug (design flaw) in 6.31.4. If you create a large terrain with a large triangle size initially, you'll almost always get "out of memory" errors and the such as it ends up creating a texture at a 1:1 scale (which could easily mean bigger than 16384x16384) rather than a more convienient size. 6.40.5 doesn't have this problem.
Well I think ulillillia is right about that !!
But just one comment about terrains in 6.40.5, never
update your 6.31.4 to the 6.40.5 when you are using a hpm terrain, the
effect on my terrains were fatal !! They got all deformitated 
