i have get this problem before my second download of celestia luna online and my solve is.. :P
1.go to start>run>cmd> "DRAG YOU ALPHA SETUP in command (cmd)"
2.type space and type type \NCRC
example :-
c:\Alpha_Setup.exe \NCRC and enter
if you get error when installation data.... download again :P
created html in Microsoft Front page :D
*can test in wampserver [localhost], http://wampserver.com/
*make you web page is Online!, http://000webhost.com/
enjoy