Pentaho Administration Console "404 Error - Page Not found"

I used Pentaho Administration Console today, and it returned "404 Error - Page Not Found". I didn't get this error before. Just wondering why I got it this time. I started a new download of biserver-ce-4.8.0-stable.tar.gz, and just try it directly, but get same error. Anyone else get the same error? Any link may be not valid now.

Here is the screen with error message, for your reference.

Thanks.Screen Shot 2013-11-15 at 2.15.39 PM.jpg

Attached Images

• Screen Shot 2013-11-15 at 2.15.39 PM.jpg (31.0 KB)