Line 15 is looking at the database connection
How is your connection defined?
Are you using MS SQL Server or an MS Access Database?
Can you send a copy of the Connections/thscData.asp file.
one thing that jumps out at me is line 9:
WA_Auth_Parameter.tableName = "null.admin";
Is "null" the name of your database?
This is a reserved word in the SQL language and should be avoided when naming database objects.