Mastery Page bug?

Starting about an 30 min to an hour ago I keep getting an error every time I try to edit my mastery page. It said a report was sent to the server but I should check the forums. So here I am trying to see if I am the only one with the problem. I re-logged twice still no good. I could maybe get away with this if it was runes since I don't change those as often but masteries I change almost every game.