Emitter not showin again

Basically the SFX below does not appear ingame although it works fine in the model editor.

The "XYQuad" and "Squirt" properties tend to, in my experience, make the emitters not show.

XYQuad can work, but I don't understand how or why; squirt, I have never managed to make work.

Thanks once again, and as usual I have spread soem rep around before giving any :p