Design Library - Preview Reference Window Missing?

Hi all,

Can someone please help me here. Somehow my preview graphic window isn't showing up when using our design library features. It feels like a window pops up vividly but doesn't pull through, I checked behind all windows and it's definitely not hidden away as usually it'll show on the windows taskbar a window of it's own.

So now I have to guess most of the feature reference points which is tricky.

Thanks, 

SolidworksModeling And Assemblies