After using 3D for a day or so I was suddenly prompted by the applicatioon to upgrade to 3D! I chose no as I had already done so.
The problem is that now, when I first start the application, I get no 3D options at all. Only a restart brings back the 3D tabs to allow me to view 3D.
It doesn't happen everytime I start the app, just enough times to become annoying.
Daz