Loading the world forever at Loading content (megaveh) V: 0.C-21615-ga0245ad96d

V: 0.C-21615-ga0245ad96d, Windows 7

When I go to make a character on a world (That I just made) it goes to load a content called ‘megaveh’ forever. it has been almost 20 minutes.
This isn’t the first time either.

Is it a known issue or something?

Update: It was an invisible error message. Pressing space fixed it.