BSP Plane Weirdness

[Nightingale]

In general, using BSP planes in the SDK tends to be problematic for me. I looked this stuff up in some UDK forums, but they don't seem to get the same problems as me so I think perhaps this is an issue particular to the RO2 SDK.

1.) When building geometry, all existing planar brushes cause an "ERROR: Brush is planar" warning. They're all textured, and I know they're not overlapping, so no clue what is going on there.

2.) They refuse to collide with anything. Checking "COLLIDE_BlockAll" seems to do nothing for planar brushes.

3.) Sometimes, when I build geometry, parts of a plane will disappear. For example, I might place a rectangle somewhere in space, and after a geometry build, part of the surface disappears, leaving what looks like 2 separate squares . In the wireframe views, they appear as a single brush, but in any other view they appear separated.

Has anyone else had any of these these problems? Or is it a normal UE3 problem and I just have I not searched hard enough for a solution?

[Srinidhalaya]

Not sure if related, I had this problem after having too many brushes on the map. I had to start converting large numbers of brushes to static mesh, which opened up a new can of worms. Entire brushes would disappear, and textures would go missing as well, yet in the properties of said brushes everything still existed. I'm not sure of there is a difference in a bsp plane vs standard bsp brush though, I may be off topic.