coldfusion - Database migration issue -

my application supposed migrate new database. changed application.cfm set new password. nothing else. asked admin update dsn info , provided dsn entry details, says has updated.

next tried log application. entering incorrect login/password giving expected error message. if login successful, instead of going welcome page showing:

"internet explorer cannot display webpage"

one issue admin told : "the site appears looping continuously until bombs out"

can please me figure out going wrong here? issues login cookies? should start investigating?

thanks in advance

code snippet here :

    <cfparam name="dest" default="#desturl#">     <cfparam name="url.sfx" default="">    <cfif not isdefined("cookie.essec")> <cfset client.status="cookie not set"> <cfinclude template="deleteclientvars.cfm"> <cfmodule   name=cspauth         environment="prod"         returnurl="#returnurl#"         logoutreturnurl="#logoutreturnurl#">      <cfelse> <script>alert("cookie.esse defined.");</script> <cfif isdefined("client.dest")>     <cfset dest = client.dest> </cfif>  <!--- if required cookie set global login page set require var--->  <cfif not isdefined("client.userid")> <script>alert("client.userid not defined.");</script>      <cfinclude template="deleteclientvars.cfm">      <cfmodule   name=cspauth             environment="prod"             returnurl="#returnurl#"             logoutreturnurl="#logoutreturnurl#">               <cfset upperuserid = ucase(uid)>             <!--- query matching user id --->             <cfquery name="qrygetuser" datasource="#dsn#" username="#dbid#" password="#dbpw#">                 select      usd_uid, usd_access_type, usd_terminated_dt, usd_last_login_dt, usd_last_logout_dt                         #tableowner#.user_data                       (usd_uid = '#upperuserid#')             </cfquery>