MS自带的ReportViewer控件来读取报表问题???

Question

this.rptViewer.ProcessingMode = Microsoft.Reporting.WebForms.ProcessingMode.Remote;                        ServerReport report = this.rptViewer.ServerReport;                        report.ReportServerCredentials = new CustomReportCredentials("Administrator", "pm810112", "");
                        report.ReportServerUrl = new Uri(@"http://mymsg2:80/ReportServer/XLRS08/");//("http://xl-moven:80/ReportServer/XL-Report");
                        report.ReportPath = @"myreport.rdl";
结果出错: 客户端发现响应内容类型为“”，但应为“text/xml”。请求失败，响应为空。请指教!!