Anyone here got UnrealEd experience?

[Spec]

I'm trying to use the Unreal Editor (Swat4Ed, to be precise) to create terrain. I used the editor's in-built tool to create a piece of terrain. Everything's working well so far, I've got myself a nice piece of terrain, but the problem is that once I go ingame, the terrain does not have any collision, neither with players, nor projectiles or havok actors. I checked every collision box I can think of in the actor properties. Is that just broken or am I doing it wrong? I can SEE the terrain just fine, light rendering is working perfectly etc...

[Doc.Pock]

these guys here know their shit way more than i so UDK - Polycount Forum