I am getting a message on my Mac that is requiring me to upgrade the software, yet, when I go to the site, http://windows.microsoft.com/en-us/skydrive/download#apps and click the download button, nothing happens. I re-downloaded Silverlight, and installed just in case, but still nothing happens. I am using the latest version of Firefox. Since the app won't come up on my computer, I don't exactly which version of the software I currently have.

Please provide some help, so I can get to my files other than through the browser.

Thank you.