I have a super simple Particle system. I am instancing a sphere (Render->Object->DupliObject->Sphere) with a white emission material. When I set the viewport to render everything shows up fine, when I hit F12 nothing shows.... WHY?
I don't have any postprocessing enabled in the rendersettings, and I tried to cache the particles, but nothing so far...
I could create a new system in a fresh scene, and append it into my main scene. So the problem is not related to the rendersettings.