"Shiny" trasparent textures (glass,fences,ect) and models disappear!

[frankvega]

Hello people, I have a problem on Cry Of Fear and its that on the new maps that I'm making I see shiny textures on fences,glass and other "}" texture.Also when I get close to some models (env_model) they dissapear, and when I get out of the area they appear again. This problem is on some models only.
For example:

Yellow circles = Shiny problem
Red Circles = Models problem