Having a very frustrating problem. In AE, my tool for changing the viewpoint/front/3d sides in a comp dissapeared. Now I'm stuck with two preview screens. I've switched layouts to default and hit show all tabs. Still nothing. Does anyone have any advice? Here is my screen. You can see the option is missing.
MultiView options/Menu is displayed only when a 3D Layer is active in the Composition. Couple this with AE's 'sticky memory' based on the last time you set up a composition, this issue arises when your new comp does not have a 3D layer and your previous AE comp had 3D layers and you enabled the MultiView option. As Rick has suggested, create a 3D Layer to access the MultiView options/menu to select your preferred Comp View option. HTH
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