Re: Help with falling of ledges!
Those Fences are Static Meshes, made in 3DS Max (Probably) or different 3D Software.
I'm doing work about it in College at the moment. So basically take it this way, our Gaming Character is 92 (or 96) Units High (Something like that) And as everyone know it needs to be balanced propely.
Some static meshes just got a Small Alpha Channel around them (Transparency) and in some cases smaller amount of Alpha Channel or not having it is better than making it bigger so Player Can stand on it. (It is all about Polygons [More Polygons = Bigger Budget])
So In other words, they might be not enough Polygons to let your character stand on it
(Some Meshes are different to another)
Hope you understand my messy writing