Can anyone help me with an

Hi Guys.
I have just loaded up unreal today and it looks like the engine is not rendering anything except for my sky sphere.
I have also found that I can not move any of my actors in the level editor.

When I play test inside the editor absolutely nothing except for the sky sphere is displayed, however when i play test in a stand alone window I get this.

Has anyone ever uncounted something like this before? and if so how did you go about fixing it?

Hi! First of all check object to show and editor viewport mode