Import and Exporting an artboard as image not working.

I normally highlight an artboard and do CMD+E this would bring up a popup that allows me to select a folder to export to. 

However whether I do this or File → Export nothing happens. This issue is going across different XD files too. I tried all forms of Export (batch, export selected, export all)

I just tried to Import and that's not working either. 

I've updated XD, uninstalled and reinstalled. the problem persists.