Goes through onstallation process, says installed but then not on the computer
Do you have a MAC or Windows ?
Which browser are you using ?
Windows (Windows 7)
If you have IE 9 or IE 10, click on the Setting icon -> Safety -> make sure there is no check on ActiveX Filtering
If there is check, click on Active X Filtering and then close Internet Explorer.
Launch it again and check for Flash Content (Youtube.com)
Retrieving data ...