UPDATE: the problem should be fixed for most players now. We're continuing to investigate. Sorry!
Sorry everyone! If you are seeing a black box in the middle of the screen and getting reloaded, it is (almost certainly) a problem with the distribution of feat rewards. We are working on it now and will get it fixed asap. In the meantime, there's nothing you need to do (or can do, in order to fix it). So … catch up on some reading? Shakespeare's supposed to be pretty great.