[Client] Spectate mode suddenly will not load.

Up until the beginning of this week, Around May 20, Spectate mode was working perfectly fine. When switching between spectating two different games, suddenly things started going wrong. The Second game was glitchy, laggy at best. After that, attempting to spectate a match would get me to the loading screen, and then either freeze, or tell me it couldn't load. Now, it will open the client, but almost instantly tell me that the spectating client will not work.

Help?