I have joined Flixster & Ultraviolet an need to update flash player on my kindle fire HD to view my movies. It downloads ok but I can't install it. It just says unable to open file when I try.
The latest Kindle Fire HD is not officially supported by Flash Player. Please see this page for a list of all certified devices:
That said, some users have been able to get Flash Player working on the Kindle Fire by using Dolphin, a third party browser.