| 1. This tutorial is tutorial 3 - the clearing of the scene was dealt with in a previous tutorial. Remember all of these tutorials are part of the same series and build on each other.
2. Adding the cube by selecting the Mesh > Cube did work in an earlier release of Blender - there have been many changes made in the last few years, some of them not so obvious or even clear why the changes have been made.
As I've said in only two posts above, these tutorials are from pre-2.37 - in fact, very pre2.37. |