It's showing names.nsf in web

Hello all,

I am new for x-pages.i have make a X-Page according to Tutorial -Exercise -2

http://www-10.lotus.com/ldd/ddwiki.nsf/dx/Tutorial-Introduction-to-XPages-Exercise-2

my exercise -01 is working fine. but according to exc -02 when i Run my X-page on Internet Explorer after server login its gives Error HTTP 500 Internal server Error and its change the path and when i refresh the page its open my names.nsf.(mail file coz in address bar its shows this http://serverIP : Port/names.nsf?Login)

( *SerVerIP =Its my Server IP

Port : =My Server Port * )

By mistake i have posted this question on IBM Lotus Notes/Domino 8.5 Forum (includes Lotus Notes Traveler)

Anyone can help me out.

Thanks in Advance.