First off all, that texture is part of q3 and not allowed to be used in trem releases.
I also tryed making my own shader, with just one line of code "surfaceparm nonsolid". It still didnt work.
For the problem are you sure you selected the shaders and not the textures?
Ops, I c'n'p wrong texture name; I'm using sfx/beam_blue.
And yeah, i'm sure.
e.g. the light beam is transparent and scrolls a bit.