If you have been playing with the standalone Flash player (a tip we provided last year to help with performance issues) sadly it will no longer allow you to play the HTML5 version. While the Flash version is available it will still be playable in the standalone Flash browser for now but once the full switch to HTML5 comes this will no longer be a valid option. Switching between HTML5 and Flash may also cause some odd results and is not recommended. That being said, HTML5 is a very versatile and modern technology with compatibility on many devices and browsers and so you should now have a larger range of options if your usual browser doesn’t seem to be working well for you.