I get the following error:

Object reference not set to an instance of an object.
[NullReferenceException: Object reference not set to an instance of an
object.]
exception0905.Component1.FillDataSet(myDataSet1 dSet) +15
exception0905.WebForm1.Page_Load(Object sender, EventArgs e) +47
System.Web.UI.Control.OnLoad(EventArgs e)
System.Web.UI.Control.LoadRecursive()
System.Web.UI.Page.ProcessRequestMain()

When trying to view a newly created webform that created using the
"Walkthrough: Creating a Web Application Using Visual C# or Visual Basic"
instructions.

Any idea why i get this error? I used different database and table than
provided in the walkthrough but followed everything so it should have worked.
New to .NET, suggestions needed. thx