[Sidebar on the topics and forum views]

I do not think that it works. Just tried it on my 3.10 test board and sidebar doesn't show anywhere and no space gets reserved for it in forum or topic view.

[Sidebar on the topics and forum views]

Any chance that you could upgrade the tutorial to 3.1?

[Sidebar on the topics and forum views]

I do not think that it works in 3.10. Found this problem in beta 3:

Open:

admin/sources/classes/output/publicOutput.php

Find:

                                        if( ! in_array( $tplHook['skinGroup'], $skin_groups ) )
                                       {
                                               continue;
                                       }

That piece of code doesn't exist.