I have downloaded facetime from the App store and I keep receiving this message - An internal FaceTime error occurred. There was a problem with FaceTime. You need to quit and open FaceTime again. Please help!

Same here!

I can't help you, I have the same problem.

This error message could result from an incorrect setting for date and time, or an operating system which does not have the latest updates installed. It's a good idea to have your location setting on automatic. Turn on the wi fi in your mac for a minute or so, to allow it to automatically search for your present location. Do this even though you have the correct time Date settings displayed.