Movie Maker Problems

Hello! I need help installing Windows Live Movie Maker. I have tried installing it several times now, but each time, i get the same results. I use the official site to download the application. i click the link to download the application, then go to my downloads and launch it. A user account control box appears, asking me if i want the following changes made to the computer, so i click yes. all i get is a blue, windows essentials box that says preparing to install. That's it. How to i get it to install?