In this case, the software is Blender. I followed the instructions on Blender.org, and it all works. But, when I click on Blender in the dash, it runs version 2.62, which is what I got with apt-get. ...
I got Blender 2.58 (stable) from blender.org (downloaded the package, extracted it). Everything works fine, but the only thing that bugs me is that the icon in the launcher (when I open it) is really ...