As a ShiVa 2.0b1 user I am working currently on HTML5 demos : They work beautifully in Chrome and Firefox

With strong hopes one day IE will just be at least as good as the other browsers, since Microsoft engineers aren't less paid to do their job and noone wants to use SilverLight..., I decided to redirect IE users to a Webplayer STK version of my demos, so at least they have the option to install the webplayer on their beloved IE...
My problem is the Webplayer for .STK files won't install at all on IE v11 (I am using Win7 x64) :
It is downloaded, I click "Install" and then... Nothing.
Well "C:\Users\ME\AppData\LocalLow\StoneTrip\WebPlayer1.8.1" does contain all .dll and .ocx AND "C:\Users\dZastrX\AppData\Roaming\Stonetrip\Web Player" is here too...
But in IE 11, the page is never refreshed, and if I do so, it just asks for being installed again... And again...
I guess the WebPlayer was never updated for IE11 ( October / November 2013 ) ?
It seems it want to be installed as if it was Firefox ( ? )
Any other testimonies, advices or help appreciated :THX