Hi i have problem with the newest firefox on youtube website is ignoring flash player and uses HTML5 player. I don't have any button to change to flash player in HTML5 settings on youtube(in another website browser it works fine), which you can see on picture but i have installed flash player and on https://helpx.adobe.com/flash-player.html after push "Check now" button flash player is detected correctly, see on picture 2. Can you help me? And sorry for my english. picture:http://s14.postimg.org/ukndagdsf/youtube.png picture 2:http://s28.postimg.org/8yr58jxyz/flash.png