I use Windows 7on my Dell Studio XPS computer. I have tried several times to download Adobe Flash Player 11 (without Google Chrome) to my computer. I am able to download it. The window say it is installed but then I periodically get notices that it is not installed and needs to be to be able to use various programs from for example the Weather channel. I have already discontinued an egreeting card contract because I couldn't get the Flash Player 11 to work. I have deleted cookies and computer history without success. Why does Adobe make this software so difficult to use and what must I do to have the installation stay installed?