3D render - requested side-by-side but got anaglyphic - how to fix I am trying to render a Blender image for Google Cardboard. 

I followed the instructions in rendering 3D video/image for google cardboard with the default scene, but it gave me the image for coloured glasses, which I gather is called anaglyphic. I am using Blender 2.77a. 

Does anyone know what I should do to fix my render?
OK, The answer seems to be:

There is another set of options on the 'save as' dialog, and you need to set the 3D option and the side-by-side option there too.

See https://www.blender.org/manual/render/workflows/multiview/usage.html for a lot more detail on this.