Metaball showing in liveviewer but not rendering

[inesalpha]

Hi everyone !

I have a quite simple scene with spheres in a cloner in a metaball.
Metaball in showing in the live viewer, evrything looks perfect there,
but then when I render, everything is totally black.

Here is what I see in the live viewer :

Here are my objects :

What could be the problem ?

Thanks so much for your help !

[aoktar]

Check with same subdivision value as much as in editor mode.

[inesalpha]

OMG thx, I should have known the answer (-_-)...
I always forget that...
thank so you much for you help again !