Changing Mastery Pages before game starts

So before the game starts, I change my mastery pages to my thresh page. This error message pops up every single time I switch to any mastery page, so I click ok and in game, I have a different mastery page than what I wanted. Example: my last game as thresh, I had the dft keystone rather than the bond of stone.

EDIT: Here is a picture of the message, and this happened again on my vel'koz where I should've had thunderlords, but had dft again. It seems as if I only can get dft for my keystone and I am sure that I selected the mastery page correctly. [img]http://i.imgur.com/2v2GFQF.png?1[/img]