My renders from sequencer are blank / black

Hi everyone, I am stuck when trying to render out a Niagara particle system. I see my Camera Cuts track as thumbnails with my content, i see the cameras little window full with content in the viewport when i have my CameraActor selected in World Outliner, but when i hit Capture Movie in Render Settings nothing is shown as output in the preview window. It is just black.

Any help would be much appreciated.
Thanks,
Giorgos

same problem here…
any solutions ye?