PARTICLES not rendering

[Clero]

Hello everyone, can someone give me a hand?
I’m trying to render particles with Corona — I made a clone of simple spheres and attached the particles group to the cloner object, but when I render, nothing shows up. Am I doing something wrong?

thanks in advanced

[Cinemike]

Care to attach your file here?

[HFPatzi]

Hey there,

first thing that comes to my mind would be setting the clones to simple instances. Not render- or multiinstances.
I hand trouble with that in the past.