.Net 2003 Access Crystal Report XI: Error:Failed To Open The Connection: [Database Vendor Code: 17 ]

I am receving this error: Failed to open the connection: [Database Vendor Code: 17 ], from .Net 2003/C# to Crystal Report XI with SQL Server 2000 has backend database.

Is there a security permission that has been overlooked?

Here is the code I use to access CR XI

ConnectionInfo connectionInfo = new ConnectionInfo();
TableLogOnInfo tableLogOnInfo;
Database DB;
'CrystalDecisions.CrystalReports.Engine.Table' table;
Tables tables;

//Log in
connectionInfo.ServerName = "ServerName";
connectionInfo.DatabaseName = "Database Namet";
connectionInfo.UserID = "userid";
connectionInfo.Password = "password";

//Get Table inf from report
DB = reportDocument..Database;
tables = DB.Tables;


//Looping through all the tables in CR and apply connection info
for(int i = 0; i < tables.Count; i++)
{
table = tables[ i ];
tableLogOnInfo = table.LogOnInfo;
tableLogOnInfo.ConnectionInfo = connectionInfo;
table.ApplyLogOnInfo(tableLogOnInfo);

}

CrystalReportViewer.ReportSource = ReportDocument.ReportSource;
CrystalReportViewer.Visible = true;

Any advise would be helpful.
Thank you