I have the AirTV box (built in Chromecast) for my Sling service. It works pretty well, however, whenever I tell it to open my Plex Server from my cellphone, it will pull up the Plex loading screen and just keep loading on my TV and eventually error out. I don't know what I possibly could have changed, it was working great. I recently updated my Plex Server on my PC, not sure what that could have changed.

I loaded it from my Sony Plex App on the TV and it worked fine. When I stream it to the built in chromecast, it does not.

Any help would be appreciated. Thanks!