[rt-users] failed to resolve handler `RT::Mason'

[webber.han]

Hi:

I want to integrate RT with Active Directory
I follow the steps in
http://wiki.bestpractical.com/index.cgi?LdapOverlay
copy CurrentUser_Local.pm to Request Tracker\rt\lib\RT
and modify the RT_SiteConfig.pm as follow:
   Set($LdapServer, "ldap.domain.tld");
   Set($LdapBase, "cn=Users,dc=domain,dc=tld");
   Set($LdapUidAttr, "uid");
   Set($LdapNameAttr, "cn");
   Set($LdapMailAttr, "mail");
   Set($LdapFilter, "(objectclass=person)");
   Set($AutoCreateFromExternalUserInfo, 1);
But I got the error message in httpd-error.log

[Mon Jul 04 15:48:12 2005] [error] [client 127.0.0.1] failed to resolve
handler `RT::Mason': Can't locate RT/Mason.pm in @INC (@INC contains:
C:/Program Files/OurInternet/Request Tracker/winrt/cgi/../../win32/lib
C:/Program Files/OurInternet/Request Tracker/winrt/cgi/../../rt/lib
C:/Program Files/OurInternet/Request Tracker/winrt/cgi/../../winrt/conf
C:/Program Files/OurInternet/Common/perl/lib C:/Program
Files/OurInternet/Common/perl/site/lib . C:\\Program
Files\\OurInternet\\Request Tracker) at (eval 107) line 3.\n

I install Request Tracker by rt-3.0.12.exe in windows xp pro

Please help if you can.
Thanks in advance,

Webber Han