Hi all

I need your expert advise again guys, so, I've created some occlusion planes in my world, but I got this editor warning when I open CK:

See Warnings file for more information.
MASTERFILE: No occlusion plane for occlusion plane ref extra.
MASTERFILE: No occlusion plane for occlusion plane ref extra.
MASTERFILE: No occlusion plane for occlusion plane ref extra.
MASTERFILE: No occlusion plane for occlusion plane ref extra.
MASTERFILE: Errors were encountered during InitItem for reference:

Base: 'PlaneMarker' (00000017)
Ref: '' (01016E43)
Cell: 'ACHBLColiseum_7_9' (01AADFBD) (7, 9) in world 'ACHBlackLand' (01AADE8E)

I'm starting to think that this planes don't work ingame, also, has anyone used this CK option:

World->World LOD->Precompute occlusion

I'm thinking that I might be missing this option, but I'm too afraid to touch the button.

Help? Thanks.