trouble with metaballs in cloudgenerator

Hallo,

I never visited a forum before. I am an absolute blender beginner. I downloaded (blender v. 2.6). My question:

I want to change (transform) a metaball-objekt into a cloud, but it seems that the cloud generator refuses to create a cloud from the metaball-objekt. Of course, the cloud generator is working when I am using simple forms like cubes etc. What can I do? I need a fine metaball-object, because later I want to use this object to export it as a stl-file to dustprint the cloud.

Thank you for your support.

Convert the metaball to a mesh. Press Spacebar and search for convert (or Alt+C)