You requested the URL:

http://nicemice.net/cexcept/src/2-0/obsolete/README-2-0-0-pre1

The web server for the nicemice.net domain is www.nicemice.net. You probably wanted the URL:

http://www.nicemice.net/cexcept/src/2-0/obsolete/README-2-0-0-pre1