Crystal Reports :: Blank Page Rendering When Run Project

[URL] ....

I followed above link to create sample Crystal Report Project. Here is my code:

string conStr = ConfigurationManager.ConnectionStrings["MasterDb"].ConnectionString.ToString();
protected void Page_Load(object sender, EventArgs e) {
ReportDocument crystalReport = new ReportDocument();
crystalReport.Load(Server.MapPath("~/CrystalReport1.rpt"));
DataSet1 ds = GetData();
crystalReport.SetDataSource(ds);

[Code] ...

When I run my project, blank page renders. No Crystal report is displayed.