Custom "fx-files" don`t work in mp

[Altbiertrinker]

Ok.

I made a map(mp). It works just fine, BUT:

 

I used effected(came with gtk 1.2.11 I think) to modify "beam_cairn2.efx."

I called "my" file "beam_cairn3.efx"

And, I used it in my map, BUT:

The effect I called with an "fx_runner" does not play.

BUT:

when I load the map in singleplayer, it does.

So it works in SP, but not in MP.

 

Is there anything I have to do with my effectfile to get it to work in mp, I tried moving it around, put it in the "mp" folder under the "effects" folder but It didn`t help---any ideas???