This error (HTTP 404 Not Found) means that Internet Explorer was able to connect to the website, but the page you wanted was not found. It's possible that the webpage is temporarily unavailable. Alternatively, the website might have changed or removed the webpage.
For more information about HTTP errors, see Help.
I am having the same problem! Someone please fix this error! I try logging and I get the same message 404 Not Found for world 25 ONLY. W40 works fine... But W25 is completely unusable. I try using firefox AND internet explorer and it neither works, both having the SAME problem.