Why do I keep getting an error message when trying to use my player service?

A

AC Question

problem establishing player service

I have a Nexus 7 and after 5.0.2 automatically installed I get the problem establishing player service message and cannot access my books. They all appear but when clicked on they go to a blank white screen with the book title on the top and nothing else. When I turn the page I get the player service message. What do I have to do to clear this and regain access to my books?