[Client] beta client - Black screen when entering champ select

This has happened to me twice now, when I select Accept (both times they were random selection times, I don't think when you select accept has anything to do with it) I go into champ select and I have a black screen. I can still minimize, view settings, and close the program with the options in the top right corner. I tried resizing the client, messing with sound, and minimizing and un-minimizing the program. Nothing worked. It only caused me to dodge because I couldn't click on anything, including summs, masteries, runes, or champion, so not a game breaking bug but a bug nonetheless.

=).