How can this occur? Shouldn't the demo apps just run out of the box?

Из-за русского языка?

Concerning opening a new page, as I do not know javascript, I use the simple export and when I opend the exported file, I could not find anything that looks like what you wrote above.

у меня почему то эта функция неактивная

If you have an object which is influenced by physics, you have to use corresponding physics functions

Is there a way in the NLA script to have the page redirect open in a new page? I tried adding _blank to the address but unsurprisingly it did not work

function mouse_down(e) {
    var x = m_mouse.get_coords_x(e);
    var y = m_mouse.get_coords_y(e);
    var obj = m_scenes.pick_object(x, y);
    if (m_scenes.get_object_name(obj) == "Cube")
          window.open(URL);
}

Just a quick note to say that I have tested on safari and after activating the webgl button, the scene opens but freezes and there is no interaction. On the safari iphone, surprisingly it works. Any ideas why?