I'm also having this error as well. Was in creative mode, and went to a part of my map. Returned to survival mode and tried to starting mining, but every time I tried to break a block, it restored almost immediately. I exited the game and tried to go back in, and now my screen is stuck on "Downloading Terrain." The screen will minimize, refresh, and return to "Downloading Terrain" but never gets past that point. I am not running a modded client, and this local, so I'm not running any plugins.
Maurice Reeves
I'm also having this error as well. Was in creative mode, and went to a part of my map. Returned to survival mode and tried to starting mining, but every time I tried to break a block, it restored almost immediately. I exited the game and tried to go back in, and now my screen is stuck on "Downloading Terrain." The screen will minimize, refresh, and return to "Downloading Terrain" but never gets past that point. I am not running a modded client, and this local, so I'm not running any plugins.