Error - The media could not be loaded

Error - "The media could not be loaded, either because the server or network failed or because the format is not supported."

We’ve found that some older browser versions aren't compatible with our technology. On a Mac, in many cases, it's possible to update your computer to Mac OS X 10.10 or newer which will resolve the issue for you.  

If you aren't able to update, the alternative would be to install Google Chrome or Firefox and use one of those browsers instead.