Hi, I added new buildable to Tremulous but I have problem with transparency. Everything looks ok, but when I walking around, then buildable doing weird things. Texture changing collor to black etc.

Why? How to fix that? Texture is from textures/karith/pallette_top.tga and in shader is:
textures/karith/pallette_top
{
cull disable
nopicmip
{
map textures/karith/pallette_top.tga
alphaFunc GE128
depthWrite
rgbGen vertex
}
}