error '800a03eb' Type mismatch

Maintaining database website,its running ASP pages on windows 2003 server with SQL server 2000. I have upgraded SP2 for SQL server to SP4 in maintance process.

The problem accur with some ASP pages are

server_errors [server_Errors] GetErrorMessage [serverSERVER version 1.0.0] error '800a03eb' Type mismatch

/server/asp/cmfls/errorconfirmation.asp, line

There may be permission /security issues related with database.help me to troubleshoot my problem.

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=395969&SiteID=1