Disappearing faces! Help me!

[Wolf-Hearted]

Helo. English is not my primary language, so please bear with me;)
So:

My problem is, when i make some shape in 2d editor, and I'll add it, this shape have some faces invisible. in Addition, some faces in the map are disappearing too! And I noticed that, there are not only near faces, there can be any face on the map. However, the fun thing is too, that sometimes part ov face is invisible- that's odd because face is undivided, but in spite ov that, some part of it is down. This looks like face is bitten by big jaw:D To show you my problems, here are 2 links, "przed.bmp" is before addin' element, "po.bmp" is after. Please tell he how to solve this problem.

Before (http://users.vlo.gda.pl/~archaon/przed.bmp)
After (http://users.vlo.gda.pl/~archaon/po.bmp)

In addition: UED3.0 Reinstall returns nothing. Problem is still here.
Some weeks ago, I replace my PC with other, completly diffrent. I see problems still.

[Animus]

did you choose subtract or add? and its better to make models whit maya btw.

[Wolf-Hearted]

Im not so stupic ^^ or course I chosen "add", and I make brushes, not meshes,

[virgo47]

Strange... but UEd/engine is not quite perfect. Try the same thing with simplier brushes (I can see three boxes with edited vertices in this case). Maybe that will not cause any damage. It is not so difficult to run into HOM effect. If you did not read Hourences' brush tutorial, try it - it can bring some light to the thing:
http://phalanx.planetunreal.gamespy.com/tut's/tutorial_bsp.htm

[Ironblayde]

Did you rebuild your geometry after that occurred? Occasionally (in UEd 2) I've seen that happen when I added a brush, but the problem went away after a rebuild.

[Hazel.H]

This happened to me before with almost exactly the same shape. I suggest you build it out of 2 or 3 seperate brushes instead :)

You could try this too, I don't know how well it will work. At the moment the bsp cuts in the brush are like this:
93998
But I think it might work better if they were like this:
93999
In the 2d shape editor you need to start with a rectangle and extend the two diagonal sides both ways instead of from one side... if that makes sense. Strange but it seems to make a difference.

[Wolf-Hearted]

Yay, thankies a lot. Im still learning, how to overtake this problem, and how to predict, when holes are goin' to appear. Apparently some shapes are screwed, but still there are other ways to establush proper shape from "tools", you're right. Thankies a lot.