When i log in, i see everywhere only blue sky. I see only red flags, monsters and other people. But i can't see grass, clouds, trees or nothing. Just only sky. So how i can get everything back?
-Asterix
Are you playing on a virtual machine perchance? What are your graphics card specs? How much RAM you have? Is this something new, or did you experience it before on the same machine? Have you tried Right Click -> Run as Administrator?
This usually happens when your GPU doesn't have enough memory. As far as textures go in stick online, they are replaced by new ones in case there's not enough memory to keep the both, which means it's most likely a memory problem.
Answer as much as you can and you'll be playing in no time.
Thanks! The problem was my computer's memory at a low. Now i can play normal. : )